Cassie is an internationally recognized expert on the treaty negotiations on climate change. She serves as the Strategic Advisor on Climate Change to UNDP’s Administrator, while also the Head of the Climate Strategies and Policies Team and Head of the Climate Promise in 120 countries. She is the creator of Mission 1.5 and the Peoples’ Climate Vote which used gaming to become the world’s largest-ever survey on climate action. Previously, she served as a Senior Advisor to the Prime Minister of Fiji as COP23 President. Cassie gave a TED talk on connecting world leaders to climate activism in 2019 and has been a featured expert by CNN, BBC, Wall Street Journal, Le Monde, New York Times, and other publications. Cassie earned her Master’s degree from Yale University and undergraduate degrees from Bowdoin College.