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TIL in WW2 they used special smoke screens that were that were half a mile long and hundreds of feet tall to hide ships and blimps from enemies.

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7rryZ TIL the farthest the human eye can see unaided: at sea level you can see for just under 3 miles, on Mt. Everest you could potentially see 211 miles, but under a dark sky you can see the Andromeda Galaxy 2.5 million light years away.
o1pK TIL there’s a caterpillar called the Jewel Caterpillar in the Amazon Rainforest that looks like a walking gummy worm.
N7D6J TIL that in 2005, Costco sent out a recall notice for punching bags that were filled with used men and women's underwear instead of sand. Everyone that purchased the bag got a replacement and a shipping label to return the bag.
4Xo7X TIL of the Deflategate scandal, where American footballer Tom Brady was accused of ordering the footballs to be deflated, resulting in him being suspended for four games.
KZOR TIL the rate of US gun violence has been steadily falling since 1993.