At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
25
Since 1982, a radio frequency emanating from Russia has been broadcasting a buzzer-like sound and, periodically, an unknown voice reads orders, names, and numbers. No one knows where exactly it is coming from or what it means.
13
The streets of Victor, Colorado, once a gold rush town, are paved with low-grade gold.
78
It's impossible to sink in the Dead Sea without equipment!
72
Mushrooms are more closely related to humans than they are to plants.
47
Couples' personalities converge over time to make partners more and more similar.
235
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
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