Hey You What If?

  

Snapshots

Hey You What If?You Built a Mega Slide. What would it take to build a slide so big that it went to the other side of the world? [S]Mon, May 5, 10:50 amCBBC10 mins
Hey You What If?You Can't Wait for Christmas? It really is possible to time travel into the future, and the team show you how! [S]Tue, Dec 24, 6:50 pmCBBC8 mins
Hey You What If?You Took All the Water Out of the Sea? Empty the oceans and you'd see hidden wonders, but you'd also cause the end of the world. [S,SL]Tue, Nov 5, 2:20 pmCBBC10 mins
Hey You What If?You Could Stop Global Warming. What if there were a thermostat that could turn the world temperature down? [S]Fri, Oct 4, 11:30 amCBBC10 mins
Hey You What If?You 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,SL]Thu, Aug 29, 2:20 pmCBBC10 mins
Hey You What If?Animals Were Supersized. Could there ever be super-gigantic insects or snails? [S,SL]Mon, Aug 26, 2:20 pmCBBC10 mins
Hey You What If?You Built a Mega Slide. What would it take to build a slide so big that it went to the other side of the world? [S,SL]Thu, Aug 8, 2:20 pmCBBC10 mins
Hey You What If?You Could Dig Through the Earth? The deepest hole humankind ever dug only got one thousandth of the way through the earth. But what would happen if you kept digging? [S]Tue, Jul 2, 9:25 amCBBC10 mins
Hey You What If?You 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]Fri, Mar 22, 10:50 amCBBC10 mins
Hey You What If?You Built a Mega Slide. What would it take to build a slide so big that it went to the other side of the world? [S]Mon, Mar 4, 10:50 amCBBC10 mins
Hey You What If?You Could Go on Holiday to Mars? Experience the ultimate in long-distance travel - a holiday on Mars! [S]Wed, Sept 27, 11:25 amCBBC10 mins
Hey You What If?You Could Stop Global Warming. What if there were a thermostat that could turn the world temperature down? [S]Fri, Apr 21, 10:50 amCBBC10 mins
Hey You What If?You Could Walk Up Walls. We take inspiration from the natural world as we imagine a new kind of superhero that can walk up walls. [S]Sat, Apr 8, 12:25 pmCBBC10 mins
Hey You What If?You Built the Tallest Building on Earth. We reveal how to create the ultimate in tall buildings by going to the moon and taking inspiration from wedding cakes. [S]Thu, Mar 23, 5:50 pmCBBC10 mins
Hey You What If?There Were No Colours. Removing all the colours from our world would change more than just how it looks. [S]Mon, Mar 20, 5:50 pmCBBC10 mins
Hey You What If?You Flew Like a Superhero. Flying like a superhero might sound like fun, but there are some serious downsides. [S]Thu, Mar 16, 5:50 pmCBBC10 mins
Hey You What If?Money Grew on Trees. 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. [S]Wed, Mar 15, 5:50 pmCBBC10 mins
Hey You What If?You 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]Tue, Mar 14, 5:50 pmCBBC10 mins
Hey You What If?You Built a Giant Sandcastle. 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! [S]Mon, Mar 13, 5:50 pmCBBC10 mins
Hey You What If?You 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]Thu, Mar 9, 5:50 pmCBBC10 mins
Hey You What If?You 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]Wed, Mar 8, 5:50 pmCBBC10 mins
Hey You What If?Animals Were Supersized. 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. [S]Tue, Mar 7, 5:50 pmCBBC10 mins
Hey You What If?We Had Two Suns. There is a way that Earth could have a second sun, so we try it out to see what happens. [S]Thu, Mar 2, 5:50 pmCBBC10 mins
Hey You What If?You Were Invisible. We try out three potential ways to become invisible and discover some surprising side effects. [S]Wed, Mar 1, 5:50 pmCBBC10 mins
Hey You What If?You Could Shout Round the World. Find out how to shout from one side of the world to the other. [S]Tue, Feb 28, 5:50 pmCBBC10 mins
Hey You What If?You Lived on Venus. 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. [S]Mon, Feb 27, 5:50 pmCBBC10 mins
Hey You What If?You 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]Tue, Nov 22, 8:45 amCBBC10 mins
Hey You What If?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. [S]Thu, Oct 13, 8:20 amCBBC10 mins
New: Hey You What If?You Could Walk Up Walls. We take inspiration from the natural world as we imagine a new kind of superhero that can walk up walls. [S]Tue, Oct 11, 8:20 amCBBC10 mins
New: Hey You What If?Earth Ran out of Energy. 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. [S]Mon, Oct 10, 8:20 amCBBC10 mins
Hey You What If?You Lived on Venus. 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. [S]Fri, Oct 7, 6:25 pmCBBC10 mins
Hey You What If?We Had Two Suns. There is a way that Earth could have a second sun, so we try it out to see what happens. [S]Wed, Oct 5, 6:25 pmCBBC10 mins
Hey You What If?The Moon Was Made of Cheese? Things don't quite go to plan when the moon turns into cheese. [S]Tue, Oct 4, 6:25 pmCBBC10 mins
Hey You What If?You Fell into a Black Hole? Experience the most extraordinary ride in the universe - falling into a black hole. [S]Mon, Oct 3, 6:25 pmCBBC10 mins
New: Hey You What If?You Only Ate Burgers. Is it possible for everyone in the world to eat burgers for every meal? [S]Fri, Sept 30, 8:20 amCBBC10 mins
New: Hey You What If?There Were No Colours. Removing all the colours from our world would change more than just how it looks. [S]Thu, Sept 29, 8:20 amCBBC10 mins
New: Hey You What If?Money Grew on Trees. 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. [S]Mon, Sept 26, 8:20 amCBBC10 mins
New: Hey You What If?You Built a Giant Sandcastle. 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! [S]Fri, Sept 23, 8:20 amCBBC10 mins
New: Hey You What If?You Built a Giant Sandcastle. 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! [S]Thu, Sept 22, 8:20 amCBBC10 mins
New: Hey You What If?You 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]Wed, Sept 21, 8:20 amCBBC10 mins
New: Hey You What If?You 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]Tue, Sept 20, 8:20 amCBBC10 mins
New: Hey You What If?Animals Were Supersized. 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. [S]Mon, Sept 19, 8:20 amCBBC10 mins
New: Hey You What If?Your Mind Could Move Things. If moving things with your mind were possible, it wouldn't work quite like you'd expect. [S]Fri, Sept 16, 8:20 amCBBC10 mins
New: Hey You What If?You Could Stop Global Warming. What if there were a thermostat that could turn the world temperature down? [S]Fri, Sept 9, 8:20 amCBBC10 mins
New: Hey You What If?You Needed Two of You. From cloning to 3D printing, what if we could actually make copies of ourselves? [S]Thu, Sept 8, 8:20 amCBBC10 mins
New: Hey You What If?We Got Rid of Bugs. 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! [S]Wed, Sept 7, 8:20 amCBBC10 mins
Hey You What If?You Can't Wait for Christmas? It really is possible to time travel into the future, and the team show you how! [S]Thu, Jun 30, 8:50 amCBBC10 mins
Hey You What If?Clouds Were Made Out of Cotton Wool? Clouds might look like cotton wool, but if they really were, things would get very messy. [S]Thu, Jun 23, 8:50 amCBBC10 mins
Hey You What If?You Could Go on Holiday to Mars? Experience the ultimate in long-distance travel - a holiday on Mars! [S]Tue, Jun 21, 8:50 amCBBC10 mins
Hey You What If?You Could Fly Like a Bird? Anyone can fly like a bird - you just have to travel across the solar system to do it! [S]Tue, Jun 14, 8:50 amCBBC10 mins