Catch up TV
Series 2: 2. You Walked Through Walls
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.
Source: CBBC
Most recent episodes of Hey You What If?
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Series 1: 12. You Can't Wait For Christmas?
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Series 1: 11. We Could Actually Stop Climate Change?
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Series 1: 10. The Earth Was Flat?
Find out why a flat earth would feel very unflat indeed!
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Series 1: 9. The Moon Was Made Of Cheese?
Things don’t quite go to plan when the moon turns into cheese.
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Series 1: 8. The Earth Stopped Spinning?
Find out why stopping the earth from spinning isn’t such a good idea.
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Hey You What If?
Series 1: 7. Clouds Were Made Out Of Cotton Wool?
Clouds might look like cotton wool, but if they really were, things would get very messy.
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Most popular episodes of Hey You What If?
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Series 1: 16. You Could Actually Reach For The Stars?
Want to reach for the stars? It would be the journey of a lifetime - literally.
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CBBC
Hey You What If?
Series 1: 15. Everything You Touched Turned To Gold?
What if you could turn things to gold? This episode shows that it might not work out that well.
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Hey You What If?
Series 2: 17. You Flew Like A Superhero
Flying like a superhero may sound like enormous fun, but there are some serious downsides that Hollywood does not tell you about - weather, extreme cold and even fizzy blood.
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Hey You What If?
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Find out why stopping the earth from spinning isn’t such a good idea.
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Series 1: 17. You Could Live In Slow Motion?
Find out why living in slow motion would let you see things no-one else can!
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