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Prime Minister David Cameron will step down by October after the UK voted to leave the European Union. Mr. Cameron made the announcement in a statement outside Downing Street, in which he said he will attempt to "steady the ship" over the coming weeks and months, but that "fresh leadership" is needed.

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.

Naish Kiteboarding: 19-year old Kai Lenny takes all his toys down to JAWS as the conditions become epic. Dropping into a 25 foot+ wave is crazy enough, now add in trying to paddle into one of these beasts, that's a whole different story!

Greentraveller's Richard Hammond shows you some of the loveliest and greenest spots in London, and gives some tips for navigating through the city.

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.”

Planning on flying during the Christmas season? Then watch this useful clip from Delta Airlines. It contains in-flight passenger safety instructions... with a touch of holiday cheer!

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.

Charlie Sheen, a controversial man... In this cooking show, he demonstrates his "winning recipes", cigarette in hand. Don't try them at home!

WWF marine advocate Bob Zuur out at night on penguin patrol as part of the Oiled Wildlife Response team.

This original rap music video celebrates the "Java Life".
Dedicated to the developer homies everywhere who code hard day and night.
Think Java programmers meet street Hip Hop.

@TheEllenShow: How do you throw a party for Bruno Mars? You planet.
;-) Bruno Mars and Mark Ronson were on "The Ellen Show" for an incredible reenactment of the video for their unstoppable song! Everyone got in on the fun. Listen closely to captions 60 and 61: Does Bruno say "Ellie" or "L.A."? Please tell us your opinion.

Jimmy Carter interviews Bruce Willis about his third Die Hard movie Die Hard with a Vengeance. Furthermore they also discuss death and head shapes.

WWF: Long-distance swimming puts polar bears at risk of drowning due to fatigue or rough seas. Cubs are at even greater risk because their smaller body size and limited body fat leaves them more prone to hypothermia, and they don’t have the energy reserves of an adult bear.

Our friends at Numberphile provide a detailed look at how the game Connect Four is won or lost.