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The Climatographers’ Dr. Mark C. Trexler LinkedIn Profile and Laura H. Kosloff LinkedIn Profile have a combined total of 50 years of climate change experience. Mark was hired into the World Resources Institute (WRI) in Washington, D.C. in 1988 to work on the first carbon offset project as well as nature-based solutions, and left WRI to found the first advisory firm in the U.S. focused on private sector climate risk assessment and mitigation.

Trexler Climate + Energy Services (TC+ES) worked with companies, national and international agencies, and NGOs all over the United States, Canada, and Japan. In the U.S. clients ranged from PacifiCorp and Nike to Stonyfield Farm and United Technologies, including everything from carbon footprinting and carbon offsets to carbon price modeling and scenario planning.

When TC+ES was acquired by the global carbon trading firm EcoSecurities in 2007, Mark took over its Global Consulting Services Group with offices in Oxford, The Hague, and Portland, OR. The Climatographers’ Laura Kosloff became EcoSecurities’ Associate General Counsel. In 2009 the original TC+ES team transitioned to DNV, a global risk management firm based in Oslo, Norway where Mark became DNV's Director of Climate Risk. Mark was a member of the Intergovernmental Panel on Climate Change when it was awarded the Nobel Peace Prize in 2007.

A decade ago, when Simon Dietz of the London School of Economics planned to teach a climate change course for business executives, he could not find a textbook for the course. The Climatographers were asked to wrote that textbook, published in 2012 under the title The Changing Profile of Corporate Climate Change, followed in 2013 by Adapting to Climate Change – 2.0 Enterprise Risk Management..


In 2012, after leaving DNV, Mark and Laura began to explore new ways to get actionable climate knowledge to individuals and decision-makers. Building the Climate Web with advanced TheBrain knowledge management software has been a key focus of that effort, and today the Climate Web includes more than 150,00 climate information building blocks that can be customized in all kinds of fit-for-purpose ways→premium.

In addition to directing the Climatographers, Mark teaches Business and Climate Change at George Washington University in Washington, DC.

For more detailed information on the Climatographers’ past projects and clients, see our dedicated micro-site.


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