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TIL The human eye primarily views the Northern Lights in faint colors and shades of gray and white. You can only really know what the true color of the aurora is by looking at it with a camera's LCD viewfinder screen or on a computer.

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vnQR TIL Operation Tracer was a top-secret WWII mission in which six men were to be buried alive inside the Rock of Gibraltar so they could monitor enemy movements after the Rock’s capture. There was no way out and anyone who died within the chamber would have to be embalmed and cemented into the floor.
E1ABo TIL of Alice in Wonderland Syndrome. Most commonly found in children, sufferers experience sensory distortions, such as feeling their heads are far from their bodies, hearing amplified or altered sounds, hallucinations, and a feeling of depersonalization or separation from one's own body.
ANr64 til As of 2022, an estimated total of 109 billion humans have died, or roughly 93.8% of all humans to ever live.
16v1X TIL that Jake from the TV sitcom Becker (the funny blind guy) is also a singer in the ska band Hepcat- Alex Désert
XmXQ TIL Augustin Mouchot, a French math teacher, was a 19th-century inventor of the earliest solar-powered engine. It converted solar energy into mechanical steam power. In 1878 he showcased his solar-powered concentrator at the Exposition Universelle in Paris & took home the gold medal from the fair.