A curious cup and some wacky wheels
Today’s puzzles are about deducing the mechanisms behind two extremely puzzling objects: a practical joke cup supposedly invented by Pythagoras and a vehicle that seemingly travels the wrong way.
1. Pythagoras’s Cup
More Stories
Cluster headaches are ‘the most painful condition on the planet’. Sufferers are going to extreme – and secretive – measures for relief
Teenagers who go to bed early and sleep longer have sharper brains, study finds
Revealed: Chinese researchers can access half a million UK GP records