Charging your phone without a socket? Dusting indoor plants with a boomerang? Making ice cubes that glow in the dark? How do you determine direction if you don’t have a smartphone or a compass at hand?

There are a few MacGyver-methods for which you only need a few supplies, and which are also of a physical interest on top of that – just look over Martin Apolin’s shoulder! Entertaining and scientifically sound, Martin Apolin presents physical life hacks.