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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.

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.

The earth has been through some major changes!

Should you stress about stress?

Matt Blank BASE jumps from a handcrafted Space Net suspended high above the desert in MOAB, Utah.

Will we go extinct if the bees all die?

Axis Flight School takes on an epic air and ground stunt.

On this episode of mythbusters the team tests out an ancient torture method.

Ever wonder how the heart symbol came to stand for the actual heart? And why do we speak of the heart as the seat of love, when love really happens in our brains? Is it true that animals only get a billion heartbeats? This week, we give you enough cool cardiac science to make your heart skip a beat.

If we suddenly disappeared, what would happen to our planet?

Candide Thovex conquers France's Val Blanc resort in a mind-blowing clip titled "One Of Those Days 2." He races in and out of what appears to be forbidden territory and straight into the crazy zone.

On January 15, 2014, Alex Honnold free-soloed El Sendero Luminoso (The Shining Path) in El Portrero Chico, Mexico in a little over 3 hours. The climb rises 2,500 feet to the summit of El Toro. It could be the most difficult rope-less climb in history.

Michael Bay would be proud. That's his philosophy on how to make feature films.

What is the oldest living thing in the world?

Psychological literature shows that we are more sensitive to small losses and than small gains, with most people valuing a loss around 1.5-2.5 times as much as a gain. This means that we often turn down reasonable opportunities for fear of the loss. However over the course of our lives we will be exposed to many risks and opportunities and this invariably means that taking every small reasonable bet will leave us better off than saying no to all of them.

I'm filming a documentary for TV about how Uranium and radioactivity have shaped the modern world. It will be broadcast in mid-2015, details to come. The filming took me to the most radioactive places on Earth (and some places, which surprisingly aren't as radioactive as you'd think). Chernobyl and Fukushima were incredible to see as they present post-apocalyptic landscapes. I also visited nuclear power plants, research reactors, Marie Curie's institute, Einstein's apartment, nuclear medicine areas of hospitals, uranium mines, nuclear bomb sites, and interviewed numerous experts.

See what a day at the gym is like with Willie Murphy, a 77-year-old power lifter and grandmother. Video by Lauren Petracca for the Democrat and Chronicle.

The Deadliest Animal In The World.

At 6 years old, your whole life stretches ahead of you.

Stand by for an animated exploration of the famous Fermi Paradox. Given the vast number of planets in the universe, many much older than Earth, why haven't we yet seen obvious signs of alien life? The potential answers to this question are numerous and intriguing, alarming and hopeful.