Though most might be unaware, the US state of California was named after a place that doesn't exist outside of literature, similar to Narnia. "California" comes from a novel written in the Spanish Golden Age.

Pop legends Sting, Bryan Adams, and Rod Stewart come together to sing this ballad "All For Love."

When wolves were reintroduced to Yellowstone National Park in the United States after being absent nearly 70 years, the most remarkable "trophic cascade" occurred. What is a trophic cascade and how exactly do wolves change rivers? George Monbiot explains the process.

Our British tour guide Lauren is taking us to Trafalgar Square today — come and join her to learn more about this tourist attraction in central London!

Georgian-British singer-songwriter Katie Melua sings her lovely song "The Walls of the World."

Part Two of an exclusive journey through Middle-earth with the cast and crew of The Hobbit: An Unexpected Journey. Enjoy!

In a passionate monologue, Linus explains what Christmas is really all about.

Caralie is at Annie’s apartment and they are chatting. They don’t know each other very well so they are curious about what the other person is like.

Penny tries to patch things up between Leonard and Sheldon when they are having a fight, but ends up making things worse!

The kids try to catch snowflakes on their tongues, and Linus once again proves to be wise beyond his years.

Come along with Anna as she tours Covent Garden, St. Paul's Church and Neal's Yard, all in London, while telling of Christmas traditions for Londoners as they relate to these locations.

More stunning footage from Alaska shows, up close and personal, the brown bears in action - hunting for salmon and caring for their young. Enjoy!

Rozalia Project knows all about marine debris. Do you? Take a look at their wrap-up video from Expedition CLEAN on the Gulf of Maine in August of 2014.

Seattle artist Matt Sellars shows off the Clovis Point, a skateboard of his own design. Check out a few scenes from its construction and test drive!

Jessica is planning a trip to the Grand Canyon and is trying to find reasonably priced accommodation.