James Thornton is a remarkable individual who has dedicated his life to fighting for climate and environmental justice. As a Wall Street lawyer, he won over 80 cases to force the Reagan Administration to clean up polluted water. It was in 2007, when he moved to Europe that ClientEarth was formed with a mission to change the way environmental protections are made and enforced. Now operating globally, ClientEarth uses advocacy, litigation and research to address the greatest challenges of our time – including nature loss, public health and climate change. In the last decade alone, ClientEarth has led an EU-wide law banning illegally harvested rainforest timber, setup the Sustainable Seafood Coalition, won numerous cases against governments for failing to tackle air pollution, and forced many nations and corporations to create sustainable change in their policy and strategy for the benefit of the climate and environment. James and his team use the most effective tool in the arsenal for change, the law. In this exclusive interview, I spoke to James Thornton about how we can tackle one of the greatest challenges our species has ever faced, climate change.