› added 1 year ago

52

TIL indoor air pollutants can be 2 to 5 times higher than outdoor levels and in some cases these levels can exceed 100 times that of outdoor levels of the same pollutants.

Read more epa.gov

via reddit.com

NA66 TIL that, differently from animals, there’s no known general and reliable tranquilizer for humans, meaning that tranquilizer guns in movies are likely to either kill the target or be ineffective.
l71BN TIL that when an axolotl loses a limb, it can regrow the missing body part within a few weeks. regenerate its limbs, spinal cord, heart, and even parts of its brain! And it can also remain in its larval form throughout its entire life.
pYWG4 TIL that since Herbert Hoover became President of the US in 1929, 7 out of 16 (43.7%) presidents were left handers. The general rate for lefties in the US is 1 out of 10 (10%).
b9pr0 TIL that 3 Honolulu firefighters were killed and 6 others injured after being attacked by Japanese planes while fighting fires at Hickam Field during the Pearl Harbor bombing. For their peacetime heroism, all 9 men received Purple Hearts, making them the only firefighters to awarded as such to date.
v1Jl4 TIL there is a 15th century French chapel in Milwaukee, Wisconsin.