› added 10 years ago

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TIL bioluminescence in lightning bugs is nearly 100% efficient.

Read more nwf.org

via reddit.com

PxOE TIL that some people use live pigs to practice tattooing on. After the pigs die, one man sells their tattooed skin.
Keew TIL genetic memory can transmit specific sets of fears, ideas and knowledge to descendants.
dm18 TIL one transatlantic flight emits more CO2 than an entire Formula 1 racing season
RWd4 TIL in 1972 a pocket of uranium in Africa was found to have undergone self-sustaining nuclear fission for over 100,000 years, making it the only known naturally formed nuclear reactor.
grlp8 TIL that the entire cast of Alien, including Sigourney Weaver, was originally selected based on genderless last names. The best person was then chosen for each character, and a first name was assigned to them.