Celebrities kickstart a chain of kindness, each gifting $100,000 to an unsuspecting individual who have had a positive impact on their lives — with a catch. Watch as the “pay it forward” chain unfolds.

Bill Nye explores science and its impact on politics, society and pop culture. Each episode tackles a topic from a scientific point of view, dispelling myths, and refuting anti-scientific claims that may be espoused by politicians, religious leaders or titans of industry.