› added 3 years ago

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TIL that Marie Curie's belongings are radioactive, including her lab notes, which are stored in lead lined boxes in the French National Library...

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kJ7dm TIL some frogs in South/Central America have the rare ability to become nearly transparent when they're sleeping but look opaque reddish-brown when hopping around. Using light and ultrasound imaging technology they found the frogs concentrate their blood in their liver, draining them of most color.
69818 TIL Back to the Future's George McFly was only played by Crispin Glover in the first movie - for parts 2 and 3, it was actor Jeffrey Weissman wearing a Crispin Glover face-mold
8eXRa TIL Canadian infantry brought over 1000 of "The Airborne Folding Bicycle" on D-Day, 1944, to travel greater distances than on foot.
p5jA TIL In the United States, a 2007–2008 survey showed that dog-owning households outnumbered those owning cats, but that the total number of pet cats was higher than that of dogs.
9YvXr TIL: McDonald's used to have a mascot named Captain Crook who stole Filet-O-Fish sandwiches, as opposed to the Hamburglar's hamburger thievery.