2min 45sec clip - What if the wise men kept walking after Jesus’s birth?

What The Tube Map Could Have Looked Like If Proposals From 1946 Had Been Implemented

3min 40sec clip - What if the moon turned into a black hole?

11min clip -What If You Just Keep Digging?

4min clip - What if you built a billion-storey building?

3min 27sec clip - What if we aimed the Hubble Telescope at Earth?

3min clip - What would a magnitude 15 earthquake be like?

4min 29sec clip - What if NASCAR had no rules?

4min 34sec clip - What if Earth suddenly stopped spinning?

3min 14sec clip - What if you threw a baseball at nearly light speed?

3min clip - Could you make an umbrella out of lasers?

4min clip - What if you swam in a nuclear storage pool?

3min 51sec clip - What if everyone jumped at once?

3min 46sec clip - What if all the lightning on Earth struck the same place at once?

3min 29sec clip - What if you drained the oceans?

3min clip - What if you tried to print Wikipedia?

4min 27sec clip - What if we teleported the oceans to Mars?

3min 28sec clip - Could you survive a nanosecond on the Sun?

4min 19sec clip - What if a glass of water were LITERALLY half empty?

5min 36sec clip - What if everyone pointed a laser at the moon?