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?!

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.

Les is recreating the story of a family lost in the Oregon woods. He's recreating it with a "surrograte family" who help him create a warm cocoon of bedding from ferns.

Les makes his own fishing gear. Will he catch dinner?

Les picks up Joe after leaving him alone for a night with only two items. He hopes Joe has been motivated by his experience to start learning survival skills from what he hears and observes.

As Les prepares to venture up a trail that has had reported sightings of the Bukwas, he finds an interesting and inexplicable display of bones and flattened grass.

Les uses a found lighter, wood and a rubber shoe to build a fire.

Les uses his tracking skills and keen observation of the big picture to explain what caused some strange signs in the woods that some might consider “mysterious.”

es starts his trek in the Caucus Mountains by organizing. He’s found something vital for any survival situation - a source of water. He rearranges hit survival kit to take as much as he can.

Les faces a fire ant infestation.

Les demonstrates thee different ways to catch fish, using minimal tools and resources.

Les creates a shelter from the rain.

Les looks over a vast forrest noting there is certainly room for an intelligent creature to go undetected, but proving whether it exists or not belongs in the hands of scientists performing observation based science.

When Les injures himself while making a fire, he must treat his hurt finger... using a hot needle.