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.

The great white shark and killer whale are both infamous marine predators. Normally they leave each other alone, but one day, biologists off the cost of California witness something unprecedented.

David Gallo shows jaw-dropping footage of amazing sea creatures, including a perfectly camouflaged octopus, and a Times Square’s worth of neon light displays from fish who live in the blackest depths of the ocean.

During the night, Sam Gruber's team of biologists has captured a young tiger shark, a perfect candidate for their scientific research.

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.

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

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!

In summer, mother bears and their young cubs can be spotted on the plains near Hallo Bay in Alaska's Katmai National Park.

Recently as a Save the Children Ambassador, Julianne Moore visited one of the poorest, most remote communities in the mountains of Appalachia in rural Kentucky where Save the Children has worked for more than 75 years.

Visit New York City's Union Square Holiday Market. Meet the people there. Hear the sounds, see the sights and enjoy what has become a popular Christmas tradition!

In this final installment of the series, a white Kermode bear encounters a black bear while fishing. Observe their behavior. Look and see for yourself what ensues!

Here’s a quick visit to a butcher store in Brooklyn where you’ll see how they make good mozzarella and get tips on choosing the perfect steak. Keep in mind that the butcher's speech is very "Brooklyn," very authentic.

In this episode, we see how the bears coexist with other creatures in their environment, and also learn about the role of the bear in Tsimshian lore. Enjoy!

The skipper of the Aqua Quest gives us an introductory tour on his boat. He explains the different electronic equipment that is necessary on a boat and talks about some new improvements which have made life easier for him and his crew.

Capt. Charles Moore of the Algalita Marine Research Foundation was the first to discover the Great Pacific Garbage Patch -- an endless floating mass of plastic trash and debris. In this first of two segments, he's drawing attention to the growing, choking problem of plastic debris in our seas.