Andrew C. Revkin is a freelance science and environmental journalist, webcaster, author, and educator. He hosts the podcast "Sustain What?" and writes its newsletter. He is also a performing songwriter and was a frequent accompanist of Pete Seeger. Revkin has written on subjects including destruction of the Amazon rainforest, the 2004 Asian tsunami, sustainable development, climate change, and the changing environment around the North Pole. From 2019 to 2023, Revkin directed the Initiative on Communication and Sustainability at The Earth Institute of Columbia University. Before that, he was strategic adviser for environmental and science journalism at National Geographic Society. Through 2017 he was senior reporter for climate change at the independent investigative newsroom ProPublica. He was a reporter for The New York Times from 1995 through 2009, where he created the Dot Earth environmental blog, which ran through 2016. From 2010 to 2016 he was also the Senior Fellow for Environmental Understanding at Pace University.