Secret Life of Scientists and Engineers

John Horgan interviews an IRA terrorist and wonders if he's made a huge (and perhaps dangerous) mistake in his life choices.

John Horgan studies terrorists and finds nuance and complexity where others see only evil.

A bunch of men try to create a kind of "female viagra," but they forget to talk with the ladies about it.

Nicole Prause finally gets a Harley Davidson... and all hell breaks loose!

Nicole Prause asks questions about human sexuality that scare other scientists. This also has an impact on her dating life.

Chris Hadfield takes a walk in outer - and inner - space.

We ask astronaut Chris Hadfield a bunch of silly questions and he doesn't shave his mustache.

While the other astronauts are sleeping, Chris Hadfield makes a music video tribute to David Bowie and comes back to Earth a viral sensation.

Janet Iwasa uses her mad animation skills to depict HIV cells and hopefully help researchers get closer to a cure.

Janet Iwasa studies animation in Hollywood and starts to think that the characters in "Lord of the Rings" behave a lot like proteins.

Janet Iwasa animates other biologists' ideas and research and creates a beautiful and useful way to communicate about the molecular world.

Danica McKellar and Winnie Cooper both have their first kiss on the set of "The Wonder Years"... and a nation swoons.

Danica McKellar's first math book flies off the shelves and helps middle-school girls become BFFs with math.

Danica McKellar becomes Winnie Cooper, America falls in love with her... and then she finds out that she's something more than Winnie.

Cynthia Erenas dreams big, builds technology and challenges gender roles while she's at it.... while she's in high school.

Cynthia Erenas connects with will.i.am of the Black Eyed Peas and becomes a superstar teen roboticist.

We give Cynthia Erenas 30 seconds to offer tips on robot-building and she suggests that you take things apart.

Bisi Ezerioha drives really, really fast to find his calm peaceful center.

Bisi Ezerioha gives the keys to his 1029 horsepower mini-van creation to the guys from "Top Gear." And they take if for a ride near a cliff.

Bisi Ezerioha reveals that even the very coolest car movies typically get the science and technology completely and utterly wrong.