› added 4 weeks ago

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TIL that the human body replaces its entire skeleton every 10 years.

Read more ncbi.nlm.nih.gov

via reddit.com

e0PXD TIL that natural gas, propane, etc don't really have a smell of their own. A chemical called methanethiol is added as a safety measure because it is detectable by the human nose at incredibly small concentrations. It is also partially responsible for the smell of bad breath and flatulence.
0wJjy TIL Steve Carell used to be a mailman and during Christmas, he would write notes to kids who would send letters to Santa and put it in their mailboxes. The note read, "Your letter to Santa has been picked up by special reindeer courier."
PdZG TIL that during WWII, the U.S. Air Force dropped more than 5 million leaflets warning Japanese civilians to evacuate cities that were going to be bombed.
JYkZk TIL about the dangerous exploitative industry of Cobalt mining in the Democratic Republic of Congo in Africa. Most of the labor is done by children for very little pay. The demand ever increasing , this mineral fuels the tech industry, cobalt is used for batteries for phones, gadgets and e cars.
PY5rw TIL that the average household will use 40% more toilet paper than usual if all of its members are staying home around the clock.