Clouds might look like cotton wool, but if they really were, things would get very messy.
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Good news - it’s possible to levitate! Bad news – there are some serious side effects.
Find out why stopping the Earth from spinning isn’t such a good idea.
If you have always wanted to shrink yourself, this is the episode for you!
The planet is being destroyed - but this episode demonstrates the things you can do to help save it.
Find out why living in slow motion would let you see things no-one else can!
Want to reach for the stars? It would be the journey of a lifetime - literally.
Empty the oceans and you’d see hidden wonders, but you’d also cause the end of the world.
It’s the ultimate baking challenge: making a gingerbread house you could actually live in.
Experience the ultimate in long-distance travel - a holiday on Mars!
Things don’t quite go to plan when the moon turns into cheese.
Find out why a flat Earth would feel very unflat indeed!
It really is possible to time travel into the future, and the team show you how!
Some day people will live on the moon – find out just what they are in for.
What if you could turn things to gold? This episode shows that it might not work out that well.
A fun run goes wrong when one ambitious runner tries going at the speed of sound.
Would it be possible to live on an Earth shaped like a doughnut? You might be surprised!
What happens if you try to catch a falling star? Spoiler alert - probably best not to try!
Is it really possible to teleport? Spoiler alert: it could end in disaster!
See what would happen if you really could switch off the sun.