Surviving a motorcycle accident can be fortunate at the best of times, but this rider somehow managed to survive falling down a cliff too.

In this heart-stopping motorcycle crash footage captured on another guy’s headcam, the rider can be seen losing control after missing a turn, and veering onto a bank at the side of the road. Which in turn causes him to miss a preventative barrier, topple over the side, and down a steep incline.

So just be careful out there when riding a motorcycle.

There’s nothing worse than unwanted and uninvited people calling at your door, it can be a real pain especially if you’re home a lot.

Well British inventor Colin Furze has created a way to deal with these pesky guests, by creating an AK47 door bell system. Of course it doesn’t use a real gun, but it will scare the crap out of people nonetheless.

Wisecrack’s Jared Bauer takes a look some of the economic lessons that you can find in Trey Parker and Matt Stone’s South Park.

In particular he looks at four episodes of the hilarious and boundary-pushing adult animated comedy series and what they can teach us about the science of scarcity.

From fire fighter trucks to a Snowmobile racing a Ferrari and other insane combinations, these really are ridiculous drag races.

What’s more some of the outcomes are truly unbelievable, as the title says, especially when it comes to a farm truck versus a Lamborghini.

No one dances quite like they danced in 1980s Hollywood movies, they seemed to have a certain unhinged joy in their moves.

And that is no more evident than in this supercut from video editor Robert Jones, who has created a tribute to 1980s movie dance scenes set to Mirifico’s ‘Hold Onto Our Love.’

YouTuber Tom Scott travels to a stretch of water called The Strid on the River Wharfe at Bolton Abbey, Yorkshire, UK.

The reason he’s gone there is he says it’s the most dangerous bit of water on the planet—a bold claim but the reason is because the currents are so strong yet it looks deceptively serene.

Stop-motion animator Kevin Parry has collated together this impressive compilation of his optical illusions which he posts to Instagram videos.

Many of them, like the high-five mirror trick at the beginning, have a ‘how the hell did he do that’ quality that leave you wanting a behind the scenes reveal.

Black holes are fascinating yet very scary things and our knowledge of them and their capabilities is limited.

But although limited we’re beginning to understand their complexities and the mysteries they hold more and more. In fact as this video show, they may in fact reveal the true nature of the universe to us.