A portion of the water you drink has already been drunk by someone else, maybe several times over.
170
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The world’s smallest book, “Teeny Ted from Turnip Town”, is 100×70 micrometers in size and requires a scanning electron microscope to read, as light beams are too large.
6
Daydreamers are better at solving complex problems.
28
Pollen never deteriorates. It is one of the few natural substances that lasts indefinitely.
58
The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
Dartboards are made out of horsehairs.
129
Standard paper cannot be folded in half more than 7 times.
232