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.

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.

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.

The two filmmakers who created Rumble talk about how Native American musicians like Link Wray were idols in the eyes of famous performers, but totally unknown to the general public.

A look at how lexicographers started creating the Dictionary of the English Language to ensure that everyone spelled words correctly and knew their correct definition.

The phenomenon of tonic immobility helps researchers study sharks, but does it also help orcas hunt and kill them?

Some orcas do prey on sharks, but how do they do it? Researchers also have to catch sharks occasionally, and there is a particular technique that they use.

Created in 1611, The King James Bible permanently shaped the English language with new phrases that are still in use today. How many of them do you know?

So if an orca attacking a shark is so rare, how do they usually behave? In this segment, we learn about how orcas around the world live and hunt.

Why would a killer whale go after a great white shark? Enter Alisa Schulman-Janiger, a biologist who is very familiar with the different families of killer whales off the coast of California.

Orcas are at the top of the food chain, but it is unprecedented that they would go after a great white shark. From the boat, whale watchers and experts alike are shocked by what they see.

David and Ben Crystal explain what goes into original pronunciation (OP) productions of Shakespeare and what they reveal about the history of the English language.

When you listen to music, multiple areas of your brain become engaged and active. But when you actually play an instrument, that activity becomes more like a full-body brain workout. What's going on? Anita Collins explains the fireworks that go off in musicians' brains when they play, and examines some of the long-term positive effects of this mental workout.

The solar airplane Solar Impulse 2 was presented on April 9th, 2014. The construction of the experimental solar aircraft didn't happen in a day. Watch this video about the construction of Solar Impulse 2 and understand the steps that had to be taken to attempt the first solar flight around the world!

A film about the global sustainability work of The Prince's Charities, founded by HRH The Prince of Wales.