Cafe

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.

Relive Nik Wallenda's two incredible walks across Chicago at epic heights with no safety tethers or nets.

After a leakage on the net, we decided to release a small trailer on our catapult project. Full story coming soon, stay tuned! Project involved 30 people for 3 months, and there is not only a catapult we brought to the edge of a cliff

Multi-tasking is actually bad for you when you use social media? Learn why.

Just when you thought your weekend plans were really exciting, a few guys had to go and jump into an active volcano. Pictures

Man Who Lost His Mother To ALS Describes What Life Is Like With The Disease

This "Embrace Life - always wear your seat belt" video shows an emotional scene where a man who is about to be involved in a car crash is being embraced by his family members.

This little boy who calls himself "Kid President" has some amazing wisdom to share: you don't need cape and you don't need money to be a hero.

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.

I'm Rebecca Brown, born 4th December 1992. Start: Sep 12 2007, 5395 days old Last photo here: March 12 2014, 7769 days old. I intend to do the project for as long as I can, it's still going