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!

When we feel extreme emotions or temperature, our sympathetic nervous system releases a chemical called norepinephrine. Adrenaline floods the body and stimulates tiny muscles in the skin called arrectores pilorum.

Flies view the world in a different way than humans, allowing them to easily dodge your fly swatter.

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

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

Cara Santa Maria conducts a simple experiment to see how our brains can be manipulated to eat less. Ever heard the phrase "your eyes are bigger than your stomach?" There's a bit of truth to that.

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?

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.

Cats may help save us from nuclear Armageddon.

Is there a way to tell how old someone is without asking? One key indicator is a person's hearing abilities.

Despite their fluffy, light appearances, clouds actually weigh quite a bit.

The keratin in our hands and feet expand when we spend time in the water, but why?

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

When you walk on ice, it melts a little bit and becomes more slippery. After you walk away, the ice refreezes in a proess called regelation.

Here's the answer to the age old question: are zebras white with black stripes or black with white stripes?!

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!

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

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

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

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

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?

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!

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.

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

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

Cats may help save us from nuclear Armageddon.

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

Les journeys to a remote community in British Columbia where sightings of the Bukwas, or Sasquatch, are common and belief in the creature is a given not a myth.

Les shows how to build a fire with the most basic items someone might take on a hike. His goal is to survive a cold Oregon night like a family did in a real-life survival story.

For the first time, Les Stroud takes a fan into the wilderness to survive alongside him. He starts with a surprise…Joseph McConnell gets only two survival items to take with him.