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TIL if you want to look for the Northern Lights online, the live feeds for Air Greenland will often have them streaming.

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pwp8 TIL Albert Einstein had an affair with a Soviet spy.
GBmj TIL - They make mouthguards for athletes that change color at higher temperatures. This is so a coach can easily spot who might be at risk for heat stroke
5RYp TIL that people who prefer to listen to U2, Radiohead, and Beethoven tended to score the highest on their SATs. In contrast, their consistently lowest scoring counterparts preferred listening to Lil Wayne and Nickelback.
KXEE TIL in 1946, a Georgia Tech Graduate Student and amateur photographer rushed to the seen of a hotel fire and snapped a photo that would would win him a Pulitzer. The photo is of a woman jumping from the 11th story to escape the flames, and led to new safety regulations across the US
VMRD4 TIL Uranus and Neptune are easy to spot in binoculars. Uranus might even look greenish, thanks to methane in the planet’s atmosphere. Once a year, Uranus is barely bright enough to glimpse with the unaided eye