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TIL the city of Knoxville, Tennessee is a international port that can connect boaters to the Gulf of Mexico and the Great Lakes, despite the fact the closest beach from Knoxville is 372 miles East.

xyQD TIL one out of every four animals on Earth is a beetle.
6Ewm8 TIL about a geopolitical oddity that is Point Roberts, Washington. As a small piece of American soil in Canada it's been called "The best gated community in America". To enter by land you need to cross an international border checkpoint.
R7n0j Humpback whales are far better known for their bellowing "songs" that can travel up to six miles, but the animals also have quiet voices. Biologists have observed humpback calves “whispering” to their mothers in tones that can be heard only within 330 feet—a strategy to prevent predators, such as orcas, from eavesdropping. Calves also want to avoid adult male humpbacks, which may try to separate the calf from its mother to mate. This shortened time with its mom could ultimately weaken the calf, which needs to drink 50 gallons of milk a day to fuel up for its long migration.
yWZV TIL during the aftermath of the I-40 bridge collapse which killed 14 people, a convicted felon was able to impersonate an Army captain and take command of the disaster scene, including FBI agents at the site.
gMymW TIL that Henri Paul, Princess Diana's driver, was three times over the legal drink drive limit on the night of her death, and was using both anti-depressants and anti-psychotics