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It's November 15, 2013.Twenty-five thousand people descend on San Francisco. Online, two billion others join in. This massive crowd erupts with a collective display of public emotion rarely seen. With a Beatlemania-like intensity, people take to the streets and screens. They are all united to fulfill the wish of 5-year-old Miles Scott, who is recovering from Leukemia. It is his dream to become Batkid and save Gotham City. Batkid Begins chronicles the making of the overnight international phenomenon that is Batkid.

Have you been doing it wrong?

Beginning around 1377, medieval England was shaken by a power struggle between two noble families, which spanned generations and involved a massive cast of characters, complex motives and shifting loyalties. Sound familiar? Alex Gendler illustrates how the historical conflict known as the Wars of the Roses served as the basis for much of the drama in Game of Thrones.

Jimmy challenges Jamie to a game of random musical impressions, such as John Legend singing the Toys "R" Us jingle.

Batteries are a triumph of science-they allow smartphones and other technologies to exist without anchoring us to an infernal tangle of power cables. Yet even the best batteries will diminish daily, slowly losing capacity until they finally die. Why does this happen, and how do our batteries even store so much charge in the first place? Adam Jacobson gives the basics on batteries.

Why is it so hard to remember someone's name?

Surfing meets Freestyle Motocross as Professoinal Jet Ski Freerider, Mark Gomez, takes us along for an epic shred session in Southern California.

He is probably the coolest dad on earth!

We mark a new milestone in the chapter of human flight. Join Jetman Yves Rossy and his protege, Jetman Vince Reffet as they explore the limits in the city of dreams.

Will artificial intelligence ever surpass human intelligence? And if that happens, will AI be good or bad? Is evil AI like we see in Avengers: Age of Ultron... inevitable?

Daredevil Insanely Jumps Over Skyscraper's Ledges Will Make You Even More Nervous Than Him

The Project: BASE crew pull off an epic high five in the French Alps.

Watch 138 people shatter the Vertical Skydiving World Record as they form a snowflake formation at speeds up to 220 mph!

Is the science of Orphan Black realistic? Could we clone humans, or engineer them to have customized traits? We take a look at today's genetic engineering technologies to find out if designer babies and human cloning is, or should be, a reality.

Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping.

Is sitting too much killing you?

The GoPro production crew journeys to Africa to explore the danger and beauty of Kevin Richardson's passions for lions and their future.

His talk was given at a local TEDx event, produced independently of the TED Conferences. "The earth is flat". "Home computers are useless". "Humanity is condemned to be starved". "Women are born inferior". Throughout the years, pioneering scientific discoveries overturn established theories, vibrant societies transcend dominant perceptions, bold individuals expand physical and intellectual limits proving everything wrong: This is the way in which we seek to improve our lives and to deepen the understanding of the world around us. At TEDxLimassol we are searching for the next refute in small and large things: In the universe and subatomic particles. In our societies and in our bodies. In our behavior, attitudes and perceptions. In our mental, physical and personal capabilities. Proving everything wrong is always the right thing to do.

Is it all just make believe?

Rocket scientists incorporate a number of different testing techniques before committing a rocket to flight. One of those tests is called a "static test." In this setup a rocket engine is fired while being anchored to a test bench. Fitted with instrumentation, the scientist can safely measure thrust, pressure, cooling, and other rocket data. Watch and witness from inside the inferno when something goes wrong.

William Mitchell takes an enchanting dive into an infinite sea of Silversides in Grand Cayman.