Hey You What If?

1 series
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Available on CBBC HD
CBBC HD

An attempt to answer some of the world's impossible questions by delving into the idea of parallel worlds.

Animals Were Supersized: Episode Image
Episode 11Animals Were Supersized

Could there ever be super-gigantic insects or snails? [S] [HD]

You Walked on Ceilings: Episode Image
Episode 12You Walked on Ceilings

We try using a gravity-bending black hole and spinning the earth faster to see if we can make it possible to walk on the ceiling.. [S] [HD]

You Were the Last Person on Earth: Episode Image
Episode 13You Were the Last Person on Earth

What would the planet be like if all other humans disappeared, leaving you as the last person on earth? [S] [HD]

You Built a Giant Sandcastle: Episode Image
Episode 14You Built a Giant Sandcastle

Is it possible to build a sandcastle the size of a real castle? We imagine how it could be done, using a pneumatic drill and a huge, solid gold steamroller! [S] [HD]

You Shrunk the Earth: Episode Image
Episode 15You Shrunk the Earth

We find out what would happen if you shrank the earth. You could jump higher and move faster, but you would end up with altitude sickness even at sea level. [S] [HD]

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