Bill Nye is the Emmy-winning Science Guy who frequently appeared in classrooms on a TV set ratchet-strapped to a rolling cart. He recently debated Answers in Genesis founder and young-earth creationist Ken Ham about the origins of our world. Twitter: @TheScienceGuy

Jeremy Scahill is an independent investigative reporter and co-founder of The Intercept, the first in a series of digital magazines to be published by First Look Media. Scahill was named one of POLITICO’s “10 journalists to watch in 2014” and his documentary Dirty Wars was recently nominated for an Academy Award. Twitter: @JeremyScahill

Dylan Ratigan is a sustainability entrepreneur who previously hosted MSNBC's "The Dylan Ratigan Show." He now has an engineering and construction firm that builds module housing for cities of the future. Twitter: @DylanRatigan

Mayim Bialik is an Emmy Award-nominated actress for The Big Bang Theory and the author of a new cookbook, Mayim’s Vegan Table. Check out her blog at kveller.com for a sneak peek at her non-dairy kugel recipe. Twitter: @MissMayim

Eric Klinenberg is a Professor of Sociology, and Director of the Institute for Public Knowledge at New York University. Editor of the journal Public Culture, Klinenberg is currently leading a research project on climate change and the future of cities in adapting to the emerging age of extreme weather. His latest book is Going Solo: The Extraordinary Rise and Surprising Appeal of Living Alone. Twitter: @EricKlinenberg

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