› added 9 years ago

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TIL that if you are allergic to shellfish, you’re also most likely allergic to cockroaches

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via reddit.com

6E00l TIL the Sovient Union developed a nuclear weapon so power that not even they were willing to test it at full capacity. The Tsar Bomba was the largest nuclear bomb ever tested in the earth's atmosphere, having a mushroom cloud spanning over 40 miles (64km) and a yield of 57 million tons of TNT.
PYakn TIL that University of Washington engineers have designed the first battery-free cellphone that can send and receive calls using only a few microwatts of power.
P1pLV TIL that objects known as optical frequency multipliers can double the frequency of a beam of light. This means that it's possible for them to convert invisible light (infrared) into visible light
womrW TIL in 1978 McDonald's gave away free razor blades with their breakfast
b95Z0 TIL that NFL QB Terry Bradshaw had elbow surgery in 1983 and told the Steelers that he would be ready to play that year. Because of this, they didn't draft future HOF QB Dan Marino. Bradshaw only played one more game, reinjuring his elbow and retiring. The Steelers didn't win another SB for 26 years