This exclusive clip from the documentary "Bill Nye: Science Guy" by David Alvarado and Jason Sussberg gives a behind-the-scenes look at how America's favorite science guy, Bill Nye, is on a mission to stop the spread of anti-scientific thought and action. Once the host of a popular kids' show and now the CEO of the Planetary Society, he's leading a mission to launch LightSail, a satellite propelled by sunlight, while in turn fulfilling the legacy of his late professor and Planetary Society cofounder Carl Sagan.

"Bill Nye: Science Guy" will have its national broadcast and streaming debut on the PBS documentary series POV and pov.org on Wednesday, April 18 at 10 PM ET (check local listings). The broadcast precedes Earth Day on April 22. POV is American television's longest-running independent documentary series and will begin its 31st season on television and streaming in summer 2018.

In addition to taking off his signature "Science Guy" lab coat, Nye has started taking on those who deny the importance of science, from prominent creationist Ken Ham to climate change skeptic, meteorologist and occasional Fox News commentator Joe Bastardi. Nye goes head-to-head to advocate for the scientific community and its invaluable findings.