› added 12 years ago

75

TIL that bears can drastically reduce their heart rate when injured as a defense mechanism against blood loss.

Read more wikipedia.org

via reddit.com

6pL7 TIL A grown man is knocked over by ankle deep water if it’s moving at 6.7 mph, by knee depth at 4 mph, and waist depth at 2.6 mph. This is one reason tsunamis are so dangerous. (Pdf)
wrV8 TIL In June 2014 scientists discovered an ocean under Earth’s crust that contains 3x the water of the surface’s oceans.
aJx0 TIL it is against the law to be in possession of debris from the space shuttle Challenger.
Wk6NA TIL monkeys DO have vocal tracts for speaking, they just don't have the brain wiring to do it
dD04Z TIL Betty Crocker was never real