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If you dropped a bowling ball and a feather in a vacuum chamber with no air, they'd actually fall at exactly the same speed. That's because gravity pulls everything equally, but air resistance usually slows lighter objects down. Pretty mind-blowing, right?

You won’t believe this guy’s knife throwing skills. This is Jiso a professional knife thrower. whose aim is so perfect it’ leave you speechless. Every single time he throws a knife, it spins through the air and lands exactly in the center of the target. like he’s got some built-in computer targeting system in his eyes. And get this —Jiso says he started training when he was just five years old, which is why he’s now an absolute master of the craft.

If you're ever trapped in quicksand, you might think you'll sink right to the bottom, but quicksand is actually much denser than your body. Since you are lighter than the sand mixture, you'll naturally float. If you wiggle your legs slowly, it allows water to flow in and help you escape.

Ever wonder what happens when you drop a bowling ball onto a trampoline from 50 feet up? Most people think it'll just bounce back, but the kinetic energy actually causes the trampoline mesh to stretch and deform, creating a massive temporary depression before the rebound occurs.

When you get a bruise, tiny blood vessels under your skin break and leak blood into the surrounding tissue. This trapped blood creates a dark mark that changes colors as your immune system works to clear it away. Over several days, the cells break down the blood, and the area eventually returns to normal.

3 facts that will blow your mind. Have you ever wondered why your shoelaces have plastic tips? Well, they're called aglets, and they prevent the laces from unraveling. Also, did you know that dolphins actually sleep with half their brain awake? Pretty crazy, right?

Here's something you probably didn't know about cats: when they slowly blink at you, they're actually showing trust. You see, cats are vulnerable when they close their eyes, so this slow blink is like them saying they feel safe around you. Pretty cool, right?

Did you know that when a cat purrs it's not just being happy, it's actually healing itself because the frequency of purring, which is around 25 to 150 hertz, can promote bone growth and tissue repair, meaning your cat is basically using sound waves as medicine.