Could you build a slide to the other side of the world? You would need to start in space, use the slippiest slide ever and make sure you have enough supplies before you go down it!

Wouldn't it be cool to be able to walk through walls? From turning into a gas to quantum trickery, we discover why it wouldn't be quite as useful as you'd like.

Bugs might be annoying, but we would soon regret it if we got rid of them - all our favourite foods would disappear, and there would be dung everywhere!

From cloning to 3D printing, what if we could actually make copies of ourselves?

Imagine if we had a thermostat that could turn the world temperature down - could we fix global warming? But be careful, a few degrees too far could cause an ice age.

Venus has acid rain, crushing pressure, and is hotter than an oven, so it might not sound like the ideal place to live. However, up in the clouds it's almost just like home.

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This episode has no summary.

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This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.

This episode has no summary.