Unexpected Hit (03:52)

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Nye, Ian Saunders, Erren Gottlieb, and Jim McKenna recall the circumstances under which “Bill Nye, the Science Guy” was created.

Influence of Carl Sagan (04:24)

Nye returns to the Seattle building where his show was originally produced and recalls advice he received from his mentor. Neil deGrasse Tyson praises Nye.

Anti-Science Movement (03:08)

Nye discusses the pushback he faces when r he discusses global climate change on television. He alludes to Ken Ham’s Creation Museum in Kentucky.

Creation Museum (02:55)

Nye visits Ham’s “anti-evolution institution,” which depicts humans living alongside dinosaurs. He has accepted Ham’s challenge to a debate. Anthropologist Eugenie Scott is skeptical of the decision.

Evolution vs. Creationism (03:07)

Nye debates Ham with CNN’s Tom Foreman moderating. Ham claims the age of the Earth cannot be proven using science. Evolutionary biologist Jerry Coyne likens the claim to “trying to deny Napoleon existed.”

National Science Teachers Conference (02:04)

Nye visits the National Science Teachers Conference where he speaks with fans. He marvels that “Bill Nye, the Science Guy” is still shown in schools.

Global Warming Denial (03:16)

Nye receives a request to avoid addressing climate change at an upcoming appearance in a conservative town. Nye commends CNN meteorologist Chad Myers who stopped denying climate change.

Nye's Childhood and Family (03:40)

Nye and his brother, Darby play with model trains. Nye tours his childhood home, recalling early scientific interest and his mother's ability as a code breaker during WWII.

Battling Ataxia (03:11)

Nye’s family is genetically predisposed to the neurological disorder. Nye and his sister, Susan undergo examination at the Ataxia Research Center. Nye recalls the toll the disease took on his father and expresses survivor’s guilt.

Planetary Society (04:30)

Nye and Tyson enjoy a drink. Tyson discusses the society Sagan founded in 1980; Nye has brought change as the group’s CEO. He and “Cosmos” producer Ann Druyan describe the group’s solar sailing project.

Ark Encounter (08:37)

Nye tours the life-size ark and pushes back against anti-science. Protestor Jim Helton and others criticize Nye for giving Ham publicity that helps him raise funds.

Fame Changes Nye (04:15)

“Bill Nye, the Science Guy” insiders discuss how fame changed Nye and the misguided pilot that nearly derailed the show. Nye visits his parents’ graves, pondering what they would make of his success.

Solar Sail Testing (04:58)

Nye visits the Planetary Society and meets fans. He explains the types of missions that would be best served by sail-powered spacecraft, and recalls the Society’s disastrous first launch attempt.

Debating a Critic (07:10)

Nye reads a Twitter message from a global climate change denier. Joe Bastardi uses workout analogies to defend his views and recalls debating Nye on “The O’Reilly Factor.”

East Greenland Ice-Core Project (08:58)

Nye visits Greenland to learn more about the project and witness evidence of global warming. He speaks with climatologist James White.

Second Debate With Bastardi (07:07)

Nye agrees to debate Bastardi at Penn State University. He remains optimistic he can change the meteorologist’s mind about climate change.

Solar Sail Launch (06:18)

Nye visits Cape Canaveral for the Planetary Society’s launch. The rocket launches successfully. Nye and his supporters reflect on Nye's legacy.

Credits: Bill Nye: Science Guy (01:39)

Credits: Bill Nye: Science Guy