Episodes
1. You Built a Mega Slide?
5 Sept 2022 · 5 min
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.
2. You Walked Through Walls?
6 Sept 2022 · 5 min
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.
3. We Got Rid of Bugs?
7 Sept 2022 · 5 min
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.
4. You Needed Two of You?
8 Sept 2022 · 5 min
From cloning to 3D printing, what if we could actually make copies of ourselves?
5. You Could Stop Global Warming?
12 Sept 2022 · 5 min
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 and could cause an ice age.
6. You Lived on Venus?
13 Sept 2022 · 5 min
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.
7. You Could Shout Round the World?
14 Sept 2022 · 5 min
Find out how to shout from one side of the world to the other.
8. You Were Invisible?
15 Sept 2022 · 5 min
We try out three potential ways to become invisible and discover some surprising side effects.
9. We Had Two Suns?
16 Sept 2022 · 5 min
There is a way that Earth could have a second sun, so we try it out to see what happens.
10. Your Mind Could Move Things?
19 Sept 2022 · 5 min
We imagine a world where it's possible to move things with your mind like films, but find that the laws of physics mean that this superpower wouldn't quite work like you expect.
11. Animals Were Supersized?
20 Sept 2022 · 5 min
We look at whether some animals can get gigantic and find out that if you are being chased by a giant snail or a humungous butterfly, then fear not, you must be dreaming.
12. You Walked on the Ceiling?
21 Sept 2022 · 5 min
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.
13. You Were the Last Person on Earth?
22 Sept 2022 · 5 min
What would the planet be like if all other humans disappeared, leaving you as the last person on earth?
14. You Built a Giant Sand Castle?
23 Sept 2022 · 5 min
Is it possible to build a sand castle the size of a real castle? We imagine how it could be done, using a pneumatic drill and a huge, solid gold steamroller.
15. You Shrunk the Earth?
26 Sept 2022 · 5 min
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.
16. Money Grew on Trees?
27 Sept 2022 · 5 min
If you had a tree that could grow money, would that make you rich? Even if you wait 20 years for your tree to grow, you will probably end up no richer than you started.
17. You Flew Like a Superhero?
28 Sept 2022 · 5 min
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.
18. There Were No Colours?
29 Sept 2022 · 5 min
Imagine removing all the colours one by one? It would change more than just how things look, and after taking out just three colours, we would not be able to see anything at all.
19. You Only Ate Burgers?
30 Sept 2022 · 5 min
If everyone in the world ate nothing but cheeseburgers, we would run out of land, and even if we went meat-free, we would have to invent some crazy burgers to get the nutrients we need.
20. You Threw a Ball Round the World?
3 Oct 2022 · 5 min
To throw a ball around the world, you need to start out in space, throw it ten times the speed of a bullet and make sure your ball does not explode when it hits the atmosphere.
21. You Built the Tallest Building on Earth?
4 Oct 2022 · 5 min
We reveal how to create the ultimate in tall buildings by going to the moon and taking inspiration from wedding cakes.
22. You Had Kangaroo Legs?
5 Oct 2022 · 5 min
To win a marathon, are you better off with the bouncing legs of a kangaroo, the long legs of a T. rex or sticking with the legs of a human?
23. You Were Indestructible?
6 Oct 2022 · 5 min
We imagine becoming unbreakable by removing our bones, turning our skin to metal and finally by becoming completely elastic, but indestructibility isn't everything we hoped for.
24. You Surfed Without Water?
7 Oct 2022 · 5 min
Sometimes you want to go surfing, but it's too far to the beach, so we try surfing on land with the help of a volcano and some giant fans.
25. Earth Ran Out of Energy?
10 Oct 2022 · 5 min
We try out a crazy idea from science fiction to build a giant sphere around the sun and give us more energy than we'll ever need.
26. You Could Walk Up Walls?
11 Oct 2022 · 5 min
We take inspiration from the natural world as we imagine a new kind of superhero that can walk up walls.
Hey You! What If... Season 2: quick answers
How many episodes are in Hey You! What If... Season 2?
Season 2 of Hey You! What If... has 26 episodes, about 2 hours in total.
When did Hey You! What If... Season 2 come out?
Season 2 premiered on 5 Sept 2022.