› added 1 year ago

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TIL The Sonic Hedgehog protein, a signaling molecule in the human body that regulates embryonic development.

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eRRL TIL illegal downloading of songs, games and software may cost you a job at the Central Intelligence Agency as they do look into your history of it
Y7e8B TIL the nut of Honey Nut Cheerios has not been present in the cereal since 2006
gMgkA TIL a theremin is a musical instrument that depends on electromagnetic fields created around its antennae, which players move their hands or fingers around to change pitch or volume.
4kXQa TIL out of some 45,000 known species of spiders, only 23 are considered to be quasi-social, which includes building and maintaining larger webs together. These colonies can grow large enough to even take down birds and bats.
R5v77 TIL about the "de Lackner HZ-1 Aerocycle" which was expected to become the US' standard reconnaissance machine. Unveiled in 1954, it required the unlucky user to stand on a platform above four whirling blades, which he then steered by tilting his bodyweight in the direction he wished to move.