› added 4 years ago

711

TIL many fingerprint scanners won't recognize the fingerprint of a dead person, as dead people's skin does not have the electrical conductance needed for such fingerprint scanners to work.

Read more science.howstuffworks.com

via reddit.com

x6KVD TIL, a male orca named Tilikum in Orlando sea world involved in three human killings including two trainers.
E1oZo TIL that the optimal nap time is 7-8 hours after wake up time (early / mid-afternoon depending on when you wake up), for 20-45 min (to prevent sleep onset issues). Longer naps should be taken earlier in the day if you are trying to catch up on sleep debt.
9KAr TIL that during the 1400s, Africans trained killer bees to protect their villages and keep the slave traders away.
ADB44 TIL the coelacanth, a prehistoric lobed-finned fish, was believed to have become extinct in the Late Cretaceous Era 66 millions years ago, until they were rediscovered extant off the coast of South Africa in 1938.
BgwEb TIL about the Alexamenos Graffito, a depiction of Jesus as a donkey aim to mock early Christians.