› added 8 years ago

95

TIL the Romans invented a hydraulic cement in 25 B.C. The basic principles of this recipe are still used to this day.

Read more wikipedia.org

via ift.tt

6EXw8 TIL of Turritopsis dohrnii, the immortal jellyfish, which upon being attacked, becoming sick or old, can completely revert to a sexually immature polyp stage, and begin its "life" again - a process which can go on indefinitely - effectively rendering it biologically immortal.
a8YdZ TIL that Bismuth, the active ingredient in Pepto-Bismol, technically has no stable isotopes - however its most stable and common isotope has a half-life more than a billion times the age of the universe. (Some more facts in the comments)
DQpZe TIL about Tartary, the historical name for Central Asia and Siberia, which has sparked conspiracy theories about a hidden past and mud floods. This globalized version posits that demolished buildings, like the Singer Building and parts of different Worlds Fairs, were involved in the cover up
gnND TIL that the Nagasaki nuclear bomb was worth $25b (Today’s money). At 70k death toll, that’s one third of a million dollars per death.
QJrme TIL Squirrels can confuse crime scenes by gnawing on bones