It's as easy as riding a bike, right? And riding is something you never forget how to do once you've learned? Well, maybe not. Learn to ride a bike steers the wrong way and you may forget how to ride a normal bike.

Science video-blogger Destin Sandlin spent eight months learning to a ride a bike with backwards steering. No, not a bike that goes backwards, but one where turning the handlebars left makes the wheel turn right, thanks to a pair of cogs between stem and steerer tube.

Such bikes are fiendishly hard to ride, especially if you already know how to ride a bike. As you lean a regular bike, you slightly turn the handlebar and front wheel. But with the handlebar geared to turn the wheel the wrong way it all goes pear-shaped.

After much perseverance Sandlin managed to learn to ride the bike. After a lot less perseverance, his three-year-old son learned to ride one too, which shows that a) it's much easier for kids to learn new skills and b) a trip to Australia is a great incentive.