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TIL Tesseract is the name of a real geometrical concept - it is a cube in 4-dimensional space. It is a 4D shape whose every face is a cube. Just like a cube can be unfolded into 6 squares in 2D space, a tesseract can be unfolded into 8 cubes in 3D space.

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e0RxE TIL That most female cheetahs go their entire lives without raising a single cub to maturity. The species is dependent on "supermoms" that are particularly adept at raising cubs. One such supermom, Eleanor, has mothered at least 10% of all adult cheetahs in the southern Serengeti.
KOl56 TIL that Cards Against Humanity joked about how they could have bought a small private island with the money they donated to charity. So in 2014 they did, renaming it “Hawaii 2”
J90j TIL that Dockers recently increased the size of their ‘coin pockets’ to accommodate the growing size of smartphones
6EyJ TIL some hospitals cut the Livestrong bracelets from patients’ wrists because they resemble the yellow “Do Not Resuscitate” bands.
VQnZ TIL South Africa has one of the largest impact craters on Earth. It is called the Vredefort Dome and is about 160 km in diameter.