Cats may help save us from nuclear Armageddon.

Screams activate the portion of our brain that houses our fear circuits.

We shed about 40,000 skin cells every hour, but somehow tattoos stay put.

When two books are interlaced they can lift two tons!

What’s the trick to winning five dollars? You have treat the dollar bill like a band aid.

Our brains can interpret an image just 13 milliseconds after we see it, but we still don’t catch everything. For our visual system to correctly process everything we see, our brains would have to be the size of houses!

Even small surprises can set off activity in the brain called the Nucleus Accumbens. That’s one of the brain’s pleasure sensors!

Beer tapping causes a chain reaction. A shockwave travels through the beer and fragments the bubbles.

Space junk, of any size, is no joke. Paint flecks can travel eight times the speed of a bullet through space!

Kilobots are modeled after the hive mindset often seen in nature. These teeny robots can work together to accomplish goals.

Salmon can swim hundreds of miles and throw themselves up over waterfalls, but hydroelectric dams can be a struggle for them. This pneumatic tube shots them to safety!

The Thatcher effect is a phenomenon where it becomes more difficult to detect emotions and features in an upside-down face. Can you guess if this man is happy, sad, or angry?

30 lemons to be exact. When your phone is out of juice, you can charge it with this juice!

Light moves fastest in a vacuum where nothing is impeding its travel. Once light hits a dense medium, it changes speed and direction.

Without a suit, space is not a friendly place. The good news is, you would pass out so quickly, you would’t be awake to witness it.

Not that we suggest you try it… Human hair is composed of various amino acids that wrap around each other like chains on a molecular level.

Screams activate the portion of our brain that houses our fear circuits.

Supermassive black holes aren't just spinning at the center of galaxies. They may actually be creating galaxies.

Stripping away the Milky Way's stars, planets, rocks and dust reveals a massive black hole lurking just 26,000 light years from Earth.

Astronaut Mike Massimino calls solar wind, "the biggest obstacle we have for exploring our universe."

More than 20 solar storms a day can occur on the surface of the sun. These energy surges can cause real problems down on Earth.

The dinosaurs died off after a massive asteroid strike with a billion times more energy than the atomic bombs dropped on Hiroshima. A team at NASA studies the impact to learn more.

In February 2013, a stunning sight in the sky over Russia made international headlines. The light of an asteroid hurtling toward Earth was brighter than the sun.

Scientists are studying Mars from every angle in preparation to send the first human astronauts to the Red Planet. Data from the Curiosity rover has proven invaluable.

Mars is home to Olympus Mons, the largest volcano in the solar system, which covers an area the size of Arizona.

Saturn's tiny, frozen moon Enceladus could hold the secrets to extraterrestrial life.

Titan, the largest moon of Saturn, could be the most alien world in our solar system.

On March 24, 1967, men see an unidentified object hovering over Montana’s Malmstrom Air Force Base, home to nuclear weapons, which are all disabled simultaneously.

A fireball in the sky over Sri Lanka in 2012 is followed days later by a mysterious downpour of red rain. During the search for a rational explanation, investigators find evidence of strange living cells with no earthly comparison.

Bizarre, hairless, blue-eyed and hunch-backed creatures have invaded Texas, attacking and mutilating livestock. Now there is evidence they are breeding and their population is set to explode. Scientists are mystified, the authorities are in denia ...

Horses and cattle have been found dead around the world. The animals are found to be drained of blood, with their organs surgically removed. Investigators are stumped as to what could be responsible.

Southeast of Mexico City, hundreds goats are found dead and completely drained of blood. Is this the work of the legendary chupacabra?