Randall Munroe: Is It Possible To Change The Moon's Colour?
Channel: World Economic Forum
Date: 2018-06-07

If everyone on earth aimed a laser pointer at the moon, would we see it change colour? Randall Munroe, creator of the webcomic xkcd, talks us through the laser light calculations – and concludes that we shouldn’t be afraid of asking stupid-seeming questions...as sometimes they can lead you to a lot of fun places.

This episode originally aired August 8, 2016.