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General information about Cradle to Cradle

Cradle to Cradle (C2C) is a holistic approach to environmental, resource and climate protection that takes into account ecological, economic and social issues. C2C sees humans as potential beneficials. Instead of making things a little less bad, we want to make a positive contribution to us humans and our environment. Why we need this shift in thinking is described in the C2C school of thought. The C2C design concept describes how we need to rethink and redesign all products and processes to become beneficial. The core of this is the selection of suitable and healthy materials in the design of products that can circulate eternally in the biological or technical cycle. The prerequisite for a C2C world is the exclusive use of renewable energy, the recycling of water and compliance with social standards.

All products must be designed and manufactured to circulate in at least one of these two loops. In this way, resources no longer become waste but, after their current use, become nutrients again for something new. Consumer goods whose materials wear out – such as tires that are worn down or textile fibers that are outgrown – must be 100% biodegradable so that they can circulate in the biological cycle. Raw materials from used products must be taken back and preserved in the same quality so that they become part of the technical cycle. You can find out more about the two circuits here.

For materials to circulate in cycles, they must not contain harmful or toxic substances and must be suitable for the specific use of the product. For example, a plastic can be a suitable material for the technical cycle if it does not contain any pollutants and can be recycled again and again in the same quality. However, a plastic is only suitable for the biological cycle if it is completely biodegradable.

What is now called the circular economy is, in principle, a form of waste management. A product has reached the end of its life cycle and we ask ourselves: What can we still do with the components of the product so that it does not completely become waste? How can we recycle the product or components of it? The problem with this is that many products are designed in such a way that they are not suitable for true recycling. For example, because different materials are bonded together in such a way that they can no longer be separated from each other without leaving residue. Cradle to Cradle therefore starts with the design of products and considers the entire life cycle. When we select and process materials for products in such a way that they can be reused again and again, we close loops completely.

Cradle to grave, meaning “from beginning to end”. The term describes our current linear economy: Materials/raw materials are extracted and built into our products with mostly short-sighted design. In the end, most of them end up in landfills or even in waste incineration plants and are thus permanently withdrawn from use. Both the extraction of the materials and their disposal cause long-term damage to the environment and to us humans.

Cradle to Cradle (also abbreviated to C2C) is an approach to a continuous and consistent circular economy. It consists of the school of thought and the design concept. The C2C school of thought aims to provide a fundamentally new view of the world and our human actions. It does not conceive of humans as pests, but as beneficial organisms on earth that can leave a positive footprint. The design concept states that appropriate usage scenarios must be defined for each product and service. Only then can healthy and suitable materials be selected to circulate continuously in biological and technical cycles.

The C2C school of thought describes why we need to completely rethink how to solve environmental, resource and climate problems equally and simultaneously. The C2C design concept describes how Cradle to Cradle is implemented in practice and what the approach means for the design and manufacture of products.

>> more about the school of thought
>> more about the design concept

In common use of language, recycling is understood as the reuse of waste products or their materials. In the German Closed Substance Cycle Waste Management Act recycling is being defined as “a recovery operation by which waste is reprocessed into products, materials, or substances either for the original purpose or for other purposes; it includes the reprocessing of organic materials but does not include energy recovery or reprocessing into materials intended for use as fuel or for backfilling.”

In practice, the recycling implemented today is usually “downcycling”. This means that technical quality is lost in the recycling process of the materials.

For example, old plastic bottles become fleece sweaters or truck tarps become bags. This process is not reversible because, for example, a fleece sweater cannot be turned back into PET bottles. On the contrary, each additional supposed recycling step (e.g. from fleece sweater to cleaning rag) reduces the quality of the starting material. As a result, raw materials inevitably become waste at some point.

Recycling according to the cradle to cradle principle, on the other hand, aims to ensure that all materials (raw and secondary materials) remain of consistent quality, even after multiple reuse. Already in the design and manufacturing process, consideration is given to how the materials used can become a resource again for the next product after it has been used. In this way, products can be broken down into single-variety starting materials after use and recycled.

Bioplastics are considered a sustainable alternative to conventional plastics. A distinction is made between biodegradable plastics and biobased plastics. When plastics are partly made from renewable raw materials such as sugar cane or wheat, they are referred to as bio-based plastics. However, they are not automatically biodegradable. With biodegradable plastics, on the other hand, the starting material does not matter; they just have to be biodegradable, as the name suggests.

The term “negative footprint” is widely used, especially as a marketing tool. Historically, it aims to place responsibility for climate and resource protection with the individual.

But on the one hand, politics and business can and must also act as much greater levers through framework conditions and future-proof innovations. Second, reducing a negative impact toward neutrality is the wrong goal – every living thing on the planet emits emissions. And we have already done too much irreversible damage for this goal to be enough to create a livable future.

Instead, all areas of society must contribute to having the greatest possible positive economic, ecological and social impact. This only works if we prioritize eco-effectiveness over eco-efficiency.

If there are any other terms that are unclear to you, take a look at our lexicon.

A literature list on C2C is currently in progress. As soon as we have completed it, we will link it here.


We want Cradle to Cradle to be a matter of course. We are committed to this through educational work and by networking politics, business, science, culture and civil society. If you want to learn more about our goals and how we achieve them, check out Vision and Mission.

The NGO was founded in 2012. The office has been in existence since 2014, and since September 2019, the head office has been at C2C LAB in Berlin.

We are happy to support you if you need information about Cradle to Cradle for a scientific paper. Just send us an email to info[at] and we will see together how we can help you.

Cradle to Cradle NGO is financed primarily by donations and sponsorship contributions. You want to support us and C2C too? Here you can find out how.

The work of our NGO is regularly supported by interns. You can find all open internship positions in our job offers.

If you are interested in working for us but can’t find a suitable advertised position, please apply via our application form.

The work of our NGO is regularly supported by people on voluntary ecological year or federal voluntary service. You can find all open positions in our job offers.

We are a registered association. Here you can find our statutes.

Yes, Cradle to Cradle NGO pursues exclusively and directly charitable purposes.

The staff of the Cradle to Cradle NGO is based in the C2C LAB office in Berlin. The work of the NGO is organized by the voluntary board of directors. In addition, we have an advisory board with which the board meets twice a year for strategy consultation and knowledge transfer. Here you can find more information about the structure and organization of the NGO.

Michael Braungart is the father of our managing director Nora Sophie Griefahn. He is a member of the Cradle to Cradle NGO Advisory Board and has no operational role.

We regularly organize events, either on our own or in cooperation with partners as well as other organizations. Our International C2C Congress takes place on a regular basis. We also host the C2C Academy for our volunteers. For specialist audiences, we offer expert forums and the C2C Summit, among other events. Since spring 2020, we have also been regularly inviting guests to our digital LAB Talks.

C2C products and C2C certification

Yes, there are already many products from different industries that have been inspired by Cradle to Cradle or have C2C certification. Check out the Products Innovation Institute site for a list of C2C-certified products.

There are a number of online stores that offer C2C products for sale. For example, Memo or Avocadostore, which have a special C2C search filter, as well as In addition, other projects are being planned, such as the C2C online store Cradlelution.

No. We are not responsible for the certification of products, but the San Francisco-based “Cradle to Cradle Products Innovation Institute” (C2C PII). If you need guidance in the certification process for your product, you can contact one of the C2C PII approved assessors.

If you want to certify your product according to Cradle to Cradle, you can contact an assessor for a consultation. The certification itself is carried out by the Products Innovation Institute.


The C2C LAB is our head office, but at the same time also an educational center and real laboratory to make Cradle to Cradle tangible in terms of content and practice. The C2C LAB is a commercial space in an East Berlin prefab building that has been renovated according to C2C, where we bring Cradle to Cradle to life.

Of course, we would like to present the C2C LAB to the public. That’s why we offer LAB tours on a regular basis. Just get in touch at info[at]

Yes, it is possible to book our LAB for events. Just write an email to and we can clarify all the details.

C2C Network Regions

Municipalities, companies and organizations (e.g. foundations, associations, NGOs or research institutions) that want to promote C2C at the municipal level. You can find all the important info on the network’s website.

Click here to register for the network. If you have any questions, Juliane Thiele, Community Development Officer, is the right person to contact (juliane.thiele[at]

The network offers an exchange platform, regular networking events and access to information material and assistance. We also involve members in Cradle to Cradle NGO events and offer discounts on all C2C formats (e.g. C2C Congress, workshops, expert forums).

C2C in companies

If you need initial input for possible C2C projects, we can help you. Here you can find out more about what we can do together for Cradle to Cradle. If your company would like to get involved with Cradle to Cradle on a local level, you can become a member of our C2C Regions network. In addition, you can have your products certified according to C2C, please contact the Products Innovation Institute or one of the assessors recognized by the PII.

We are very pleased when companies are interested in a partnership with us and want to support us. For example, your company can become an Impact Partner of the NGO, a product partner in the C2C LAB or a member of the C2C Regions network. You can find more information here. In addition, we are always happy to hear from people, service providers and other companies who give us an NGO discount.

We are happy to help initiate C2C projects in companies or organizations. Our expertise lies in the mindchange and creative process around the question of what role Cradle to Cradle can play in your sustainability strategy. We are happy to discuss further possibilities for strategic cooperation – Wolter Student (wolter.student[at], member of the management board, is the right contact person for this.

Press & Public Relations

We are very pleased about the interest in Cradle to Cradle and are happy to provide our logo, graphics as well as pictures.

If you need the logo for certification, please contact the Products Innovation Institute. Cradle to Cradle NGO does education and networking work for Cradle to Cradle. However, we do not certify products. The certification is carried out by the Products Innovation Institute, which also holds the rights to the Cradle to Cradle Certified logo and is independent of us. Unfortunately, we cannot answer inquiries in this regard.

Currently, we release our images and graphics for editorial and non-commercial purposes only and solely to explain Cradle to Cradle. It is important for us to differentiate ourselves from the conventional circular economy. We therefore request an explanation of how and in what context our material is to be used prior to release.

To do so, send us a request at .

Here you can download all issues of the magazine. You can find printed copies at our C2C LAB or at our events.

For all press inquiries, please contact our press team at presse[at]

If you would like to receive monthly updates on our work, you can sign up for our C2C NGO News here.

Our press team at presse[at] is the right contact for this.

Please send us an e-mail to info[at] describing the details of the event.

Please send us an e-mail to info[at], in which you describe the details of the event etc.

C2C Volunteer/get active

We welcome anyone who would like to volunteer with us. As an active member you get access to our network and have a whole range of benefits. Our volunteers are involved in regional groups and alliances. If that’s not for you, find further information here.

You can become a sponsor and support us financially with a monthly or annual contribution. Also, as a donation-based NGO, we are always happy to receive donations that make our work possible. You can find a few more ideas here.

This allows you to test for 6 months, free of charge, whether volunteering with us is right for you. You get access to our internal network and can network there with active people nationwide and participate in projects. After 6 months we will come back to you and ask if you want to stay active with us.

If there is no C2C regional group in your region yet, we would of course be very happy if you become active. Please contact our volunteer management team (ehrenamt[at]

We have an individual membership fee, which means you can choose the amount you would like to support our work with. We recommend a monthly contribution of at least 10 €.

If your address or bank details have changed or you would like to adjust your amount, you can notify us of the changes using the forms below:

>> Supporter Change data

>> Volunteer change data

Alliances are nationwide issue-specific groups that advance Cradle to Cradle in their respective areas.

Your question was not answered? Then write to info[at]

Design concept (C2C Design concept)

Humans need to rethink and redesign to solve our climate and resource problem in the long run. The C2C design concept is the guide for this. It is modeled after natural cycles in which any waste is a nutrient for something new. Cradle to Cradle takes into account all ecological, economic and social aspects of products as early as the design phase. Only recyclable materials that are suitable for the specific purpose of a product are used.

Svenja Damberg

Svenja Damberg ist seit 2021 Senior Research Fellow am Institut für Technologie- und Innovationsmanagement der TU Hamburg. Sie ist außerdem Projektmitarbeiterin für Technologie- und Innovationsmanagement und Wissenstransfer bei der Cradle to Cradle-Modellregion Nordostniedersachsen. Damberg schrieb ihre Dissertation im Bereich Kundenmanagement bei Genossenschaftsbanken an der TU Hamburg. Zuvor war sie u.a. beim Recruiting-Technologie-Startup RelinkLabs in Kopenhagen im Bereich Marketing und Kommunikation tätig. Sie hat Business and Development Studies an der Copenhagen Business School studiert.



Svenja Damberg has been a Senior Research Fellow at the Institute for Technology and Innovation Management at TU Hamburg since 2021. She is also a project associate for technology and innovation management and knowledge transfer at the Cradle to Cradle Model Region Northeast Lower Saxony. Damberg wrote her dissertation in the field of customer management at cooperative banks at the TU Hamburg. Previously, she worked in marketing and communications at the recruiting technology startup RelinkLabs in Copenhagen, among others. She studied Business and Development Studies at Copenhagen Business School.

Christoph müller

Christoph Müller arbeitet seit 2015 für die Gebäudewirtschaft der Hansestadt Lüneburg. Dort leitet er aktuell das C2C-inspirierte Probeprojekt „Neubau Hort Anne-Frank-Schule“. Zuvor hat er 9 Jahre als Bauleiter und in der Projektentwicklung gearbeitet. Müller ist gelernter Tischler und Bauingenieur.


Christoph Müller has been working for the building management department of the Hanseatic City of Lüneburg since 2015. There, he is currently managing the C2C-inspired trial project „Neubau Hort Anne-Frank-Schule“. Prior to that, he worked for 9 years as a construction manager and in project development. Müller is a trained carpenter and civil engineer.

Andreas Thürmer

Andreas Thürmer ist seit 2020 Leiter der Geschäftseinheit Strategie, Organisation und Kommunikation bei der Berliner Stadtreinigung. Er ist seit 2001 bei der BSR und war dort als Leiter des Vorstandsbüro, Prokurist und Leiter der Organisationsentwicklung tätig. Zuvor war Thürmer interner Berater bei Audi. Er ist außerdem Vorstandsvorsitzender der Entsorgergemeinschaft der deutschen Entsorgungswirtschaft e.V. und Mitglied im Umweltausschuss der IHK Berlin. Thürmer ist Diplom-Ingenieur und hat an der Universität Stuttgart Maschinenbau studiert.


Andreas Thürmer has been head of the Strategy, Organization and Communication business unit at Berliner Stadtreinigung since 2020. He has been with BSR since 2001, where he served as head of the board office, authorized signatory and head of organizational development. Prior to that, Thürmer was an internal consultant at Audi. He is also chairman of the board of the Entsorgergemeinschaft der deutschen Entsorgungswirtschaft e.V. and a member of the environmental committee of the Berlin Chamber of Industry and Commerce. Thürmer holds a degree in engineering and studied mechanical engineering at the University of Stuttgart.

Peter Kurth

Peter Kurth ist seit 2008 geschäftsführender Präsident des Bundesverbands der Deutschen Entsorgungs-, Wasser- und Rohstoffwirtschaft. Seit 2020 ist der studierte Jurist zudem Präsident des europäischen Entsorgerverbands FEAD. In seiner beruflichen Laufbahn war Kurth unter anderem für die Deutsche Bank und die Kreditbank als Jurist tätig und war von 2001 bis 2009 Vorstandsmitglied des Berliner Entsorgungsunternehmens Alba. Zuvor begleitete Kurth unterschiedliche politische Ämter. Ab 1994 war er Staatssekretär im Berliner Finanzsenat und ab 1999 Finanzsenator. Er war zudem Aufsichtsrat in unterschiedlichen Kreditunternehmen wie der Bankgesellschaft Berlin sowie der Landesbank Berlin und Abgeordneter des Abgeordnetenhauses Berlin.


Peter Kurth has been Executive President of the Federal Association of the German Waste Management, Water and Raw Materials Industry (BDE) since 2008. Since 2020, the law graduate has also been President of the European Waste Management Association FEAD. In his professional career, Kurth has worked as a lawyer for Deutsche Bank and Kreditbank and was a member of the executive board of the Berlin waste management company Alba from 2001 to 2009. Prior to that, Kurth held various political offices. From 1994, he was State Secretary in the Berlin Finance Senate and from 1999 Finance Senator. He was also a member of the supervisory board of various credit companies such as Bankgesellschaft Berlin and Landesbank Berlin, and a member of the Berlin House of Representatives.

Lorena Zangl

Lorena Zangl arbeitet seit 2017 in der hauptamtlichen Geschäftsstelle der C2C NGO. Seit 2020 leitet sie als Referentin den Bereich Kommunale Entwicklung und betreut in dieser Funktion das Netzwerk C2C Regionen. Außerdem ist sie für die Erarbeitung eines Leitfadens für kommunale Beschaffung und C2C verantwortlich. Sie studierte “Political & Social Studies” und “Öffentliches Recht” an der Universität in Würzburg und absolvierte den Master Global Change Management an der Hochschule für nachhaltige Entwicklung in Eberswalde. Zuvor sammelte sie Arbeitserfahrungen im Stiftungsbereich, verschiedenen NGOs für Umwelt und Soziales und Bundespolitik.

Lorena Zangl has been working for C2C NGO since 2017. Since 2020, she has been head of the Municipal Development department and, in this capacity, oversees the “C2C Regions Network”. She is also responsible for the development of a guide for municipal procurement and C2C. She studied “Political & Social Studies” and “Public Law” at the University of Würzburg and completed a Master’s degree in Global Change Management at the University for Sustainable Development in Eberswalde. Previously, she gained work experience in the foundation sector, various environmental and social NGOs and federal politics.

Ilse Beneke

Ilse Beneke leitet seit 2016 die Kompetenzstelle für nachhaltige Beschaffung beim Beschaffungsamt des Bundesministeriums des Innern und für Heimat, wo sie sich mit der praktischen Implementierung von Nachhaltigkeitskriterien in öffentlichen Auftragsvergaben befasst. Zuvor war sie Referentin im Ministerium für Umwelt, Gesundheit und Verbraucherschutz des Landes Brandenburg. Beneke ist Volljuristin mit Spezialisierung Umweltrecht und hat 2013 berufsbegleitend ihren Master zum Thema “Responsible Management” abgeschlossen.



Ilse Beneke has headed the Competence Center for Sustainable Procurement at the Procurement Office of the Federal Ministry of the Interior and Home Affairs since 2016, where she deals with the practical implementation of sustainability criteria in public procurement. Previously, she was an advisor at the Ministry of the Environment, Health and Consumer Protection of the State of Brandenburg. Beneke is a fully qualified lawyer specializing in environmental law and completed her master’s degree in “Responsible Management” in 2013 while working.

Dagmar Schulz

Dagmar Schulz ist seit 2021 erste Landrätin des Landkreises Lüchow-Dannenberg. Sie ist seit 2003 im Landkreis Lüchow-Dannenberg tätig und hat dort unter anderem die Fachbereiche Kultur, Kreisarchiv und Museen, kaufmännisches Gebäudemanagement, Straßenverkehr sowie Jugend-Familie-Bildung geleitet.


Dagmar Schulz has been the first female district administrator of the Lüchow-Dannenberg district since 2021. She has worked in the district of Lüchow-Dannenberg since 2003 and has headed the departments of culture, district archives and museums, commercial building management, road traffic and youth-family-education, among others.


Bernhard Reger leitet seit Mai 2021 die Bereiche Marketing und Unternehmenskommunikation der Leipfinger-Bader Ziegelwerke. Zuvor war er in unterschiedlichen Kommunikations- und Marketingagenturen tätig, unter anderem als Mitgründer und Teilhaber der Agentur Synektar und Inhaber und Gründer von reger’s Design- und Kommunikationsagentur. Reger ist gelernter Werbekaufmann und Diplom-Kommunikationswirt.


Bernhard Reger has been in charge of marketing and corporate communications at Leipfinger-Bader Ziegelwerke since May 2021. He previously worked in various communications and marketing agencies, including as co-founder and partner of the Synektar agency and owner and founder of reger’s design and communications agency. Reger is a trained advertising merchant and holds a degree in communications.

Vanja schneider

Vanja Schneider ist seit 2020 Geschäftsführer und Strategieverantwortlicher der Moringa GmbH. Zuletzt war er als Geschäftsführer der Interboden-Gruppe unter anderem für das Projekt The Cradle in Düsseldorf verantwortlich. Schneider ist Bau- und Wirtschaftsingenieur und seit 1991 in der Immobilienwirtschaft, vor allem in der Immobilienentwicklung, tätig.

Vanja Schneider has been Managing Director and Head of Strategy at Moringa GmbH since 2020. Most recently, as Managing Director of the Interboden Group, he was responsible, among other things, for The Cradle project in Düsseldorf. Schneider is a civil and industrial engineer and has been working in the real estate industry, primarily in real estate development, since 1991.

sören bartol

Sören Bartol ist seit Dezember 2021 Parlamentarischer Staatssekretär im Bundesministerium für Wohnen, Stadtentwicklung und Bauwesen. Zuvor war er von 2013 bis 2021 stellvertretender Vorsitzender der SPD-Bundestagsfraktion. Seit 2002 ist Bartol direkt gewähltes MdB für den Wahlkreis Marburg-Biedenkopf. Er ist seit vielen Jahren für die Themen Bau, Wohnen und Stadtentwicklung zuständig, u.a. als Arbeitsgruppensprecher im Bundestag. Bartol ist Diplom-Politologe.

Sören Bartol has been Parliamentary State Secretary at the Federal Ministry for Housing, Urban Development and Building since December 2021. He was previously deputy chairman of the SPD parliamentary group from 2013 to 2021. Since 2002, Bartol has been a directly elected Member of Parliament for the constituency of Marburg-Biedenkopf. He has been responsible for the topics of construction, housing and urban development for many years, including as a working group spokesman in the Bundestag. Bartol holds a degree in political science.

Dr. hans georg brendle

Dr. Hans Georg Brendle ist seit 1997 Research & Development Manager bei der J. Rettenmaier & Söhne GmbH+Co KG, zu der unter anderem JRS Petcare gehört. Er ist Diplom-Chemiker und hat an der Eberhard Karls Universität Tübingen promoviert. Er beschäftigt sich unter anderem mit der mechanischen und chemischen Verarbeitung von pflanzlichen Zellstoffen für Anwendungen in Pharma, Lebensmitteln und Technik.


Dr. Hans Georg Brendle has been Research & Development Manager at J. Rettenmaier & Söhne GmbH+Co KG, which includes JRS Petcare, since 1997. He holds a degree in chemistry and a doctorate from Eberhard Karls University in Tübingen. Among other things, he is involved in mechanical and chemical processing of cellulosic plant material for pharmaceutical, food and technical applications.

Thomas Bader

Thomas Bader ist Gründer und Geschäftsführer der Leipfinger-Bader GmbH sowie Gründer & Geschäftsführender Gesellschafter der Bader Media GmbH. Darüber hinaus hält Bader diverse Aufsichtsrats- und Vorstandspositionen inne, beispielsweise beim Bundesverband der Deutschen Ziegelindustrie e.V. Er ist Diplom-Ingenieur und Diplom-Kaufmann.

Thomas Bader is founder and managing director of Leipfinger-Bader GmbH as well as a founder & managing partner of Bader Media GmbH. In addition, Bader holds various supervisory board and executive board positions, for example at the Bundesverband der Deutschen Ziegelindustrie e.V. He holds a degree in engineering and a degree in business administration.

Dipl. agr. Ing.
Aloys Oechtering

Aloys Oechtering ist seit 1989 Bereichsleiter im Unternehmensbereich organische Abfälle, Biomasse und Bioenergie der Unternehmensgruppe Remondis. Er ist außerdem Geschäftsführer verschiedener Spezialgesellschaften für organische Abfälle, wie Remondis SmartRec, und Aufsichtsratsmitglied verschiedener Beteiligungsgesellschaften mit kommunalen Partnern. Oechtering ist in diversen Verbänden, wie beispielsweise dem Entsorgerverband BDE tätig. Er studierte Agrarwissenschaften an der TU München und der Universität Göttingen.




Aloys Oechtering has been head of the organic waste, biomass and bioenergy division of Remondis Group since 1989. He is also managing director of various specialist companies for organic waste, for example Remondis SmartRec, and a member of the supervisory boards of various associated companies with municipal partners. Oechtering is active in associations such as the BDE. He studied agricultural sciences at the Technical University of Munich and the University of Göttingen.

Manuel Ehlers

Manuel Ehlers ist seit 2016 Head of Sustainable Property der Triodos Bank. Seit 2021 ist Ehlers außerdem Mitglied im Immobilienbeirat der DGNB. Zuvor war er als Projektentwickler viele Jahre mit der Konzeption und Realisierung von Immobilienprojekten in Berlin betraut. Er ist gelernter Wirtschaftsingenieur mit einer Spezialisierung auf nachhaltiges Bauen.


Manuel Ehlers has been Head of Sustainable Property at Triodos Bank since 2016. Since 2021, Ehlers has also been a member of the DGNB’s Real Estate Advisory Board. Previously, he worked for many years as a project developer and was in charge of the conception and realization of real estate projects in Berlin. He is a trained industrial engineer specialized in sustainable construction.

André Siedenberg

André Siedenberg ist seit 2014 bei der Kommunal Agentur NRW GmbH in Düsseldorf als Berater für kommunale Beschaffung tätig. Seit 2015 ist er außerdem als Rechtsanwalt zugelassen. Er vertritt öffentliche Auftraggeber in Nachprüfungsverfahren, hält Seminare zum Vergaberecht und unterstützt Nichtregierungsorganisationen in allen Fragen der nachhaltigen Beschaffung. Zuvor war er im Ministerium für Wirtschaft, Energie, Industrie, Mittelstand und Handwerk des Landes Nordrhein-Westfalen im Referat für Vergaberecht tätig. Siedenberg studierte Rechtswissenschaften und Europäisches Recht an der Julius-Maximilians-Universität Würzburg.


André Siedenberg has been working as a consultant for municipal procurement at Kommunal Agentur NRW GmbH in Düsseldorf since 2014. He has also been admitted to the bar in 2015. In this capacity, he represents public contracting authorities in review proceedings, holds seminars on public procurement law, and supports NGOs in all matters of sustainable procurement. Previously, he worked at the Ministry for Economic Affairs, Energy, Industry, SMEs and Trade of the State of North Rhine-Westphalia in the department for public procurement law. Siedenberg studied law and European law at the Julius Maximilian University of Würzburg.


Natalie Rottmann-Boos ist seit 2020 als Projektmanagerin in der Kompetenzstelle für sozial verantwortliche Beschaffung bei Immobilien Bremen tätig. Dort unterstützt sie den kommunalen Einkauf bei Ausschreibungen und bringt eine sozial-ökologische und zirkuläre Beschaffung voran, beispielsweise mit dem Projekt „SDG 12: Fair handeln und beschaffen `Made in Bremen´“. Zuvor war Rottmann-Boos zehn Jahre lang als Projektmanagerin im Offshore-Windkraftbereich tätig.


Natalie Rottmann-Boos has been working as a project manager in the competence center for socially responsible procurement at Immobilien Bremen since 2020. She supports the purchasing department in tenders and promotes social-ecological and circular procurement, for example with the project “SDG 12: Fair trade and procurement `Made in Bremen´”. Before that, Rottmann-Boos worked as a project manager in the offshore wind power sector for ten years.


Sybille Mai ist Leading Consultant und Standortverantwortliche in Berlin für die EPEA GmbH, mit Schwerpunkt Cradle to Cradle im Bau. Zwischen 2008 und 2015 baute sie bei Drees & Sommer in Berlin die Beratungskompetenzen zur Nachhaltigkeit auf und begleitete als DGNB-Auditorin und LEED-AP eine Vielzahl von Green-Building-Zertifizierungen. Weitere Stationen führten die Diplom-Wirtschaftsingenieurin als Abteilungsleiterin für Immobilienmanagement und Geländeentwicklung zur Messe Berlin sowie in die verantwortliche Projektsteuerung.



Sybille Mai is Leading Consultant and Site Manager for EPEA GmbHs Berlin office, with a focus on Cradle to Cradle in construction. Between 2008 and 2015, she built up sustainability consulting expertise at Drees & Sommer in Berlin and, as a DGNB auditor and LEED-AP, accompanied a large number of Green Building certifications. Further positions led her to Messe Berlin as head of department for real estate management and site development as well as into responsible project management. Mai holds a diploma degree in industrial engineering.


Nora Sophie Griefahn ist Co-Gründerin und geschäftsführende Vorständin von Cradle to Cradle NGO. Die Umweltwissenschaftlerin koordiniert die politische und wissenschaftliche Arbeit der 2012 gegründeten gemeinnützigen Organisation und treibt ein Umdenken in Wissenschaft, Politik, Bildung und Gesellschaft voran, das mehr als nur Klimaneutralität zum Ziel hat. Sie ist als Expertin für Cradle to Cradle und eine klimapositive Zukunft gefragt und spricht darüber auf Veranstaltungen sowie als Gastkommentatorin oder Gesprächspartnerin in Printmedien und digitalen Formaten.  Darüber hinaus lehrt Griefahn an verschiedenen deutschen Hochschulen. 



Nora Sophie Griefahn is executive managing director and co-founder of Cradle to Cradle NGO. She majored in Environmental Sciences at Leuphana University Lüneburg and Goethe University Frankfurt with stays at University of Natural Resources and Life Sciences in Vienna and University of Copenhagen. As the only German, she was elected as a GreenBiz’ 30 Under 30 inspiring young leader in 2018. 

In 2012, she co-founded Cradle to Cradle NGO (C2C NGO) with Tim Janssen in order to establish Cradle to Cradle principles in economy and politics. C2C NGO connects the fields of business, education, politics, and civil society by creating networking platforms and educational formats. 

As co-executive director, Nora coordinates the NGOs scientific, political and educational work and actively shapes a new understanding of material health and circularity. Nora is a sought-after expert, speaker and panelist on Circular Economy and Cradle to Cradle with a broad expertise in chemical construction, healthy product design, and the coherences between climate change and resource scarcity. Furthermore, she is a member of various scientific advisory councils and a lecturer at the Technical University of Berlin.


Tim Janßen ist geschäftsführenden Vorstand und Mitbegründer der gemeinnützigen Cradle to Cradle NGO. Er studierte Wirtschaftswissenschaften an der Leuphana Universität Lüneburg und der Dualen Hochschule Baden-Württemberg. Dabei lag sein Fokus auf Gründung, Innovationsmanagement und verantwortungsvollem Wirtschaften. Auslandsaufenthalte führten ihn an das Athlone Institute of Technology in Irland, sowie die Universität Wien im Rahmen eines PROMOS- Stipendiums des DAAD.

Aus der Idee heraus, die Cradle to Cradle Denkschule und das Designkonzept in die Mitte der Gesellschaft zu tragen, gründete Tim Janßen 2012 C2C NGO mit und leitet diese seither als Co-Geschäftsführer. Dabei entwickelt er Strategien, um eine maximale Wirkung der Organisation auf die Gesellschaft zu erreichen, und gestaltet aktiv das Wachstum der noch jungen, stetig größer werdenden Bewegung.

Tim Janßen hält als Redner zahlreiche Fachvorträge auf nationalen und internationalen Konferenzen und Fachtagungen und gibt sein Wissen um Cradle to Cradle an Fachpublikum und Interessierte weiter. Des Weiteren lehrt er als Hochschuldozent an der Dualen Hochschule Baden-Württemberg (DHBW), Leuphana Universität Lüneburg, HS Mittweida sowie der TU Berlin.


Tim Janßen is executive director and co-founder of Cradle to Cradle NGO. He majored in Business, Entrepreneurship, Innovation and Leadership at Leuphana University Lüneburg and Duale Hochschule Baden-Württemberg (DHBW). In 2012, he co-founded Cradle to Cradle NGO (C2C NGO) with Nora Sophie Griefahn. C2C NGO connects the fields of business, education, politics, and civil society by creating networking platforms and educational formats. In 2019, the NGO established the C2C LAB in Berlin: the world’s first renovation in an existing building based on Cradle to Cradle criteria. Serving as an educational center, NGO head office, and real-world laboratory, it is here where the C2C school of thought and design concept become reality. As co-executive director, Tim develops strategies to maximize the organization’s impact on society and actively shapes the growth of this young, ever-growing movement. He is a sought-after expert for Cradle to Cradle, Circular Economy and Social Entrepreneurship. He regularly holds keynotes and partakes as panelist at national and international conferences. Furthermore, Tim is a lecturer at DHBW, Leuphana University Lüneburg and TU Berlin.

dr. andreas bukowski

Andreas Bukowski ist seit 2020 Erster Bürgermeister der Gemeinde Haar. Seit 2019 ist er außerdem Vorsitzender des CSU Ortsverbands Haar und des Gewerbeverbands Haar Trudering. Zuvor war er zehn Jahre lang als Leiter Marketing & Vertrieb und als Geschäftsführer der Styx Naturcosmetics GmbH tätig. Bukowski ist promovierter Dr. Phil. und hatte zwischen 2009 und 2013 einen Lehrauftrag an der Ludwig-Maximilians-Universität München.



Andreas Bukowski has been First Mayor of the Bavarian municipality of Haar since 2020. Since 2019, he has also been Chairman of the local branch of the Christian Social Union party in Haar and the Haar Trudering trade association. He previously was Head of Marketing & Sales and Managing Director of Styx Naturcosmetics GmbH for ten years. Mr. Bukowski holds a PhD and was a lecturer at Ludwig Maximilian University in Munich between 2009 and 2013.


Michael Behnke ist seit 2004 General Manager der Markenagentur Belly Button Paris. Seit 2021 vertritt er außerdem ehrenamtlich die Plant Litter Association (PLA) in Deutschland und Frankreich, die sich europaweit dafür einsetzt, Verbraucher*innen und Regierungsorgane auf das Umweltproblem mineralischer Katzenstreu aufmerksam zu machen. 2018 initiierte Behnke eine vergleichende Life-Cycle-Assessment-Studie verschiedener Arten von Katzenstreu, die erstmals das Umweltproblem Mineralstreu wissenschaftlich untersuchte. Er unterrichtet außerdem seit 2014 an der American University of Paris. Zuvor war er unter anderem für die Publicis Group, Young & Rubicam und TBWA Paris tätig.



Michael Behnke has been the General Manager of branding and brand communication agency Belly Button Paris since 2004. Since 2021, he is the honorary representative of the Plant Litter Association (PLA) in Germany and France. The association works across Europe, raising awareness among consumers and governmental bodies about the environmental problem of mineral cat litter. In 2018, Behnke initiated a comparative life-cycle assessment study of different types of cat litter, the first to scientifically examine the environmental problem of mineral litter. He also has been a lecturer at the American University of Paris since 2014. Previously, he worked for the Publicis Group, Young & Rubicam and TBWA Paris, among others.

Vanja schneider

Biografie Text Bei der Cradle to Cradle Certified™-Zertifizierung, die das gemeinnützige Products Innovation Institute (C2CPII) vornimmt, werden verschiedene Faktoren und Ebenen der Herstellung, Nutzung und der Wiederverwertung bewertet. Es gibt fünf Abstufungen in der Zertifizierung von Basic über Bronze, Silber, Gold bis hin zu Platin, welches den höchsten Produktstandard kennzeichnet. Dabei werden die fünf Faktoren Materialgesundheit, Wiederverwendbarkeit, Nutzung erneuerbarer Energien und Kohlenstoffmanagement, Wasserqualität sowie Sozialstandards betrachtet. Weltweit gibt es aktuell knapp 300 C2C-Unternehmen mit über 8.000 C2C-Produkten.