In the Indigenous language of Tierra del Fuego, the word ‘mamihlapinatapai’ refers to a look shared by two people, each wishing that the other would initiate something they both desire, but which neither wants to begin.’

Phosphenes are the bursts of light you see when you rub your eyes.

The Cookie Monster’s real name is Sid. ‘Cookie Monster’ is just a nickname that stuck.

A chameleon’s tongue is twice as long as its body and reaches a top speed of 13 mph (just under 21 km/h) when it snags a snack.