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.

Want to reach for the stars? It would be the journey of a lifetime - literally.

A fun run goes wrong when one ambitious runner tries running at the speed of sound.

What happens if you try to catch a falling star? Spoiler alert - probably best not to try!

Would it be possible to live on an Earth shaped like a doughnut? You might be surprised!

Find out why living in slow motion would let you see things no-one else can!

Why waking up with lizard powers would make you useless on earth but a superhero in space!

Is it really possible to teleport? Spoiler alert: it could end in disaster!

It’s the ultimate baking challenge: making a gingerbread house you could actually live in.

See what would happen if you really could switch off the sun.

Experience the most extraordinary ride in the universe – falling into a black hole.

Anyone can fly like a bird – you just have to travel across the solar system to do it!

Empty the oceans and you’d see hidden wonders, but you’d also cause the end of the world.

What would happen if there really was a lift that took you all the way up to space?

The deepest hole humankind ever dug only got one thousandth of the way through the earth. But what would happen if you kept digging?

Find out why turning into a huge giant would be no fairy tale.

Experience the ultimate in long-distance travel - a holiday on Mars!

Good news - it’s possible to levitate! Bad news – there are some serious side effects.

Clouds might look like cotton wool, but if they really were, things would get very messy.