Water is actually naturally blue.
48
Dartboards are made out of horsehairs.
129
Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
The first household refrigerators cost about $16,000, in today's money!
47
People who laugh more are better able to tolerate pain - both physical and emotional.
36
A fire in Australia has been burning for more than 5,000 years!
91
20252 is Smokey the Bear's own zip code.
35
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