WATCH: This mountain biker’s helmet-cam video will give you a heart-attack

We’ve shown you some cool stuff filmed with a GoPro camera before, but nothing adrenaline-pumping and vertigo-inducing as this.

When watching off-road mountain bikers from afar, it’s no doubt impressive. But when you see it from a first-person perspective, you really realize the concentration, skill and balls-of-steel that this kind of sport takes.

Watch the video below and try not to have a heart-attack.

VIDEO: Watch this 96 year-old poker player humiliate his cocky younger opponent

Poker is a tough game. Sometimes, the worst scenarios you can think of are right there waiting to bite you in the rear end. This lesson is always most learned when a player decides to sit back and get cocky.

But if you ever do decide to get cocky, it better not happen if 96 year-old Jack Uri is sitting to your left. The video shows a hand from the 2013 World Series of Poker, where Uri and his opponent both flop a full house – problem is, Uri’s full house is better.

Unbeknownst to him, the other guy goads Uri into moving all his chips in. First, it seems like the old man is a little confused, but it turns out he was slow-playing his hand beautifully.

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LOOK: Ukrainian photographer captures the magical miniature world of snails

Ukrainian nature photographer Vyacheslav Mishchenko’s interest with the miniature natural world around us began early on in his youth.

“As a child, my father taught me to hunt mushrooms near my home and we would always come across all manner of bugs and creatures,” he said in an interview with the dailymail. “As I got older and my interest in photography grew, I decided I wanted to catch these magical scenes on camera.“

Mishchenko shoots his subjects, which include jumping spiders, bees, etc., in their natural habitats. He also has a diverse body of work which includes a variety of art forms, such as woodworking and painting. Be sure to check out his website to see other examples of his art.

(h/t: Bored Panda)

Look:

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WATCH: This footage of underwater nuclear bomb tests will haunt your dreams

Footage from the atomic tests of the 1950s are some of the most haunting images to ever be recorded.

According to the cameramen who filmed the tests, the Wahoo and Umbrella underwater explosions were more visually stunning than the above-ground tests.

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From Gizmodo:

2.5 miles seemed like a safe distance for an underwater explosion. As it turned out, it wasn’t. The waves engulfed an entire cargo ship near to ground zero. The wall of water kept advancing, generating gigantic waves that hit the island from where Bradley and his colleagues were filming. The third wave, the tallest of them all, covered the entire island. They saved themselves by quickly climbing to some palm trees carrying their heavy film camera equipment.

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