The filmmakers talk about some of the people they wanted to interview for the documentary. Sometimes it just took time, and in a few cases it didn't work out at all. For Christina, one highlight was getting to interview writer and activist John Trudell before his death in 2015.

Stevie Salas and Christina Fon talk about striking the right balance between entertainment and a political message, and what they hope their film will achieve.

We leave the macaques in Gibraltar to travel to the Galapagos Islands to learn about marine and land iguanas.

Stevie Salas and Christina Fon discuss what is next for the film Rumble: The Indians Who Rocked the World as it premieres around the world.

Welcome to the world's greatest collection of restored and functioning motorcycles. From the dirtiest barns to the most exclusive auctions and private collections, they'll go anywhere to track down a bike. From Paloma productions.

The segment focuses on the alien striped iguanas of the Galapagos Islands, albinism in a variety of animals, and the peppered moth.

The Barber Motorsports Museum's staff talk about how they source motorcycles and parts. We go along with them as they visit flea markets and high-end auctions.

Annette talks about the Wild West, and takes us to a famous gold mining town in South Dakota that was an important part of United States history.

The last segment focuses on Australia. We visit the Warrawong Earth Sanctuary, where there are breeding programs to reintroduce such indigenous animals as bandicoots and quolls, creatures that came close to extinction.

Annette visits the Erickson Aircraft Collection in Madras, Oregon. A highlight of the collection is a plane that appeared in a very famous movie.

Judging by the 26 billion views on over 2 million YouTube videos of them, one thing is certain: cats are very entertaining. But their strange feline behaviors, both amusing and baffling, leave many of us asking: Why do cats do that? Tony Buffington explains the evolutionary history behind some of your cat’s strangest behaviors.

Orca365 combines exciting travel opportunities and breathtaking remote communities to help make a difference. Their trips offer a unique mix of full-on action-packed itineraries with the ability to give back and be involved in the communities one visits.

Here's the trailer for an inspiring film about the efforts of ordinary people to make the world a more sustainable place. Experts talk about the necessity of taking action.

The birth cycle of kangaroos, affectionately called “roos,” is the subject of this video from National Geographic.

Peg Harris shows off her cozy New York City art studio and some of the tools she works with as a painter and printmaker.