About The Climate Web

What Makes Us Unique

The problem facing climate change decision-making at all levels is not a shortage of knowledge or expert insights regarding relevant topics. It is the challenge of accessing that knowledge.

In the face of almost infinite information about climate change, getting the right information to decision-makers is far more difficult than it sounds. Decision-makers are looking for “actionable knowledge” with which to make decisions, whether they are individuals, business executives, or policy makers. When it comes to climate change, however, that actionable knowledge is usually lost in the general deluge of climate information.

The Climatographers have worked on climate change for 30 years. We have had a long-standing interest in how knowledge management tools can be used to overcome the fundamental communications barriers undermining efforts to tackle climate change. The Climate Web is our effort to overcome those barriers. It is a unique climate change decision-support tool, allowing access to the insights and expertise of thousands of topical experts, and covers almost every variable relevant to business decision-making. It’s also open-access. 

What Our Clients Say

"Having the Climate Web available is like having 100 leading experts in climate science, climate risk, risk management, and corporate strategy collaborating with you at the decision-making table."

Project Mgr 

Fortune 100 Client

"Mark Trexler's (and his team's) deep knowledge of climate change risk and adaptation issues is simply unsurpassed. Their comprehensive domain knowledge, analytic capabilities, work capacity, and ability to communicate a truly complex issue to a sometimes reluctant audience is extremely impressive."

Eirik Nyhus

Director of Environment

Det Norske Veritas

"We worked with Mark's team for many years at Stonyfield Farm Yogurt, starting in 1996 when he briefed us on the then-new idea of carbon offsets. Mark is a rare breed of consultant- deep expertise, yet an ability to translate highly technical information and make it easily understandable. Mark is a brilliant, creative, strategic thinker. We highly recommend him and his team for just about anything!"

Nancy Hirshberg

Hirshberg Strategic

Our Journey

The Climate Web was launched after Dr. Mark Trexler attended a business conference in New York City in 2010 where the authors of Influencer: The Power to Change Anything described the critical importance of two questions to all human decision-making: 1) is the topic worth it to me?; and 2) what can I do to advance my interests in the topic?

After working with corporate clients on climate change for 20 years, he thought to himself: “wow, climate change consultants do a terrible job of helping their clients answer those two questions.” The Climate Web was launched the next day as a way of pulling infinite climate information apart so that it can be reorganized in ways that help decision-makers at any level answer those two key questions.

Since We Started

The Climate Web has come a long way in the last six years. We’ve reorganized it numerous times to make the information in it more accessible to anyone wanting to access it. We’ve added hundreds of videos to help explain what’s in the Climate Web.

The Climate Web now includes 120,000 “thoughts” or information building blocks, linked together in more than 250,000 ways. It is an amazing resource! We are confident that if there is an answer to climate change, it’s in the Climate Web. 

In the Climate Web:








reports and journal articles


news stories and blogs

Meet The Team

Dr. Mark C. Trexler has more than 30 years of regulatory and energy policy experience. He has advised clients around the world on climate change risk and risk management. Mark joined the World Resources Institute in Washington, DC, in 1988, where he worked on the first carbon offset project, the CARE Agroforestry Project in Guatemala. Mark founded and directed Trexler Climate + Energy Services (TC+ES) from 1991–2007. After TC+ES was acquired by EcoSecurities’ in 2007, Mark directed its Global Consulting Services Group until 2009, and was Director of Climate Risk for the global risk management firm of Det Norske Veritas from 2009-2012. He is widely published on business risk management topics surrounding climate change, including in the design and deployment of carbon markets. Mark has served as a lead author for the Intergovernmental Panel on Climate Change, and holds advanced degrees from the University of California at Berkeley.

Laura H. Kosloff an environmental attorney, has worked as Associate Editor of the Environmental Law Reporter in Washington, DC, and as an environmental litigator for the U.S. Department of Justice. She served as General Counsel to TC+ES from 1991-2007; after that, she was Associate General Counsel to EcoSecurities where she supported teams of more than 20 climate change consultants. She has worked extensively on the design of greenhouse gas mitigation and offset policies, and participated in carbon offset negotiations and due diligence. Ms. Kosloff holds a J.D. degree from the University of California at Davis, and a B.A. from Antioch College in Yellow Springs, Ohio.


chess board with globe on top

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