› added 11 years ago

112

TIL you can check if a credit card number is valid with a simple algorithm

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via reddit.com

nyAB TIL that most of the dialogue in the original Iron Man film was ad-libbed by Robert Downey Jr, and that Gwyneth Paltrow had more trouble matching him with a suitable line, since she never knew what he would say next.
OGA0a TIL, when the asteroid that caused the Cretaceous-Paleogene Mass Extinction Event hit earth, the force was so high, that some rocks/material was ejected into space, leaving our atmosphere, while some burned upon re-entry.
wpwY TIL that while abundant in the universe, Helium is a finite resource on Earth and cannot be manufactured. Its use in MRI’s means a shortage could seriously affect access to this life saving technology.
d8wbj TIL that whenever Queen Elizabeth is talking with someone, she uses her handbag to signal coded messages to her staff to indicate how the conversation is going.
ADoja TIL that US territories like Puerto Rico get to vote in primaries and caucuses to help political parties choose nominees for the presidential election despite not being able to vote in the presidential election itself