Geoffrey was previously a Climate Change Solutions Fund Postdoctoral Fellow at Harvard with Professor Naomi Oreskes and, jointly, a Postdoctoral Affiliate at the Institute for Data, Systems and Society at the Massachusetts Institute of Technology with Professor Jessika Trancik. Geoffrey received his PhD in Materials Science & Engineering at MIT and was also awarded the MIT Graduate Certificate in Science, Technology and Policy. Geoffrey grew up in the UK, and as an undergraduate obtained a First Class Honours degree in Natural Sciences (physics) from Trinity College, University of Cambridge.
Geoffrey’s research and organizing have been covered by most major news outlets. He is also a frequent contributor and commentator in international media, such as PBS Newshour, The New York Times, The LA Times, The Financial Times, and The Guardian.
Geoffrey’s academic publications include the first ever peer-reviewed analysis of ExxonMobil’s 40-year history of climate change communications, which demonstrated that the company misled the public about climate science and its implications. It was the seventh most talked-about climate change article of 2017, with global news coverage reaching a potential audience of half a billion people. During CNN's 2019 U.S. Democratic presidential Climate Town Hall, the study was cited by Anderson Cooper to question Joe Biden about “hold[ing] fossil fuel corporations and executives who’ve lied to the public accountable.” The study is also cited in numerous city, county, and state lawsuits against ExxonMobil and other fossil fuel companies. Geoffrey has briefed U.S. Senators and Governors, testified as an expert witness to EU Parliament and the Philippines Commission on Human Rights, and co-authored several amicus briefs in support of climate litigation.
During his PhD at MIT, Geoffrey’s research included assessing the costs and carbon intensities of the 125 most popular cars in America and inventing patented next-generation LEDs using nanomaterials called quantum-dots. Geoffrey’s review of quantum-dot LEDs in Nature Photonics is the most highly cited in its field.
From 2012-16, Geoffrey co-led the fossil fuel divestment campaign at MIT, which precipitated the Institute’s first climate action plan. In 2016, Geoffrey helped organize the first major scientist protests against the Trump administration.