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Today I learned that there are only about 25 blimps in the world and only half of those are operational. This is partly due to high construction and operation costs

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d8JyZ TIL that the word "twit" which eventually became "tweet" was coined by Iconfactory, which created Twitterrific (a third party twitter client). This was the same company which designed the first bird icon for thier own app, which eventually became synonymous with Twitter.
1a4Y4 TIL in the last two decades, around 10 US aircraft carriers have been "sunk" by diesel electric submarines in war games.
EexV Today I learned that by smiling, (fake or not) you actually speed up your recovery from stressful situations.
N75V1 TIL that the Rare Earth hypothesis states that the origin of life on Earth required an improbable combination of astrophysical, as well as geological events in order to occur, and will likely not happen again in the Universe.
awvN9 TIL that 'GropeCunt Lane' was a popular English street name in the middle ages, and was named so because of the level of prostitution going on within that particular area