Chris Anderson is the head of TED, a non-profit organization that provides idea-based talks and hosts an annual conference in Vancouver, British Columbia, Canada. TED’s widely known TED Talks are free to the world at TED.com. Chris is also known for his leadership of new ideas around climate change and recently hosted the global COUNTDOWN climate change initiative in Edinburgh, Scotland. Through the Audacious Project, Anderson has raised over $1 Billion for worldwide impact-driven projects.

Stephen Petranek is a science and financial writer and editor. He was senior editor for science at Life magazine, as well as editor-in-chief of Discover Magazine, Tropic Magazine, The Washington Post's Magazine, and the financial newsletter Breakthrough Technology Alert. He was the first editor-in-chief of This Old House magazine for Time Inc. He is co-founder of Arc Programs. Petranek spoke at the TED conference in 2002, 2003, and again in 2016. His book How We’ll Live on Mars was published in 2015.