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.

Young black bears need to be careful when encountering the North American porcupine. Enjoy more footage from Alaska and Princess Royal Island in British Columbia, where young raccoons are also out and about.

This December over 190 nations will gather in Paris to discuss a new global agreement on climate change. The talks are called 'COP21' which stands for the 21st annual Conference of the Parties, but what does all that mean and why is any of it important? This film will not only give you the facts but help you understand why it matters to all of us - in less than two minutes!

"Help us to complete development of the Ocean Energy Turbine designed to replace Fossil Fuel and Nuclear Energy Dependence." Back this project and make the world a better place.

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

Travel over the ocean and through the woods with Robby Naish, Kevin Langeree and Jesse Richman as they make their way down the West Coast in search of one-of-a-kind kiteboarding spots!

Observe more stunning footage from Alaska of the bald eagle and the black bear. And finally catch a first glimpse of the rare glacier bear. Enjoy!

Singer Meghan Trainor sits down with Ellen for her first interview since undergoing vocal cord surgery.

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

Alex Bellos tells us about a far superior method of cutting a cake using scientific principles.

Jamila Lyiscott is a “tri-tongued orator;” in her powerful spoken-word essay “Broken English,” she celebrates — and challenges — the three distinct flavors of English she speaks with her friends, in the classroom and with her parents. As she explores the complicated history and present-day identity that each language represents, she unpacks what it means to be “articulate.”

President Barack Obama made fun of Donald Trump during his comedy routine at the White House Correspondents' Dinner in 2011 after Trump arrogantly had taken credit for the release of the President's long-form birth certificate earlier in the week.

Our journey begins in Alaska's Katmai National Park, both inhospitable and beautiful. We observe brown bears as they hunt salmon, we track the rare glacier bear, and then we continue south to British Columbia on our hunt for the rare Kermode bear, also called ghost bear or spirit bear.

Yabla's Lauren takes us on tour of Oxford Street, the busiest street in central London!

Jimmy Carter interviews Chevy Chase, American comedian, actor and writer, revealing that he would love to be a successful jazz pianist.