› added 2 months ago

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TIL that bones can bleed and bruise just like skin; I banged my toe against a brick wall and did some deep research after.

Read more my.clevelandclinic.org

via reddit.com

OGQRe TIL that in 1963, the British army tested how long a WWI Vickers Machine Gun could fire. It fired 5 Million Rounds, Firing Continously for Seven Days, an Average of 500 Rounds Per Minute for 10 000 Minutes.
NKxP TIL there are only four original citrus species (pomelo, citron, mandarin, and papeda). All others (lemon, lime, grapefruit, etc.) are hybrids.
9YKX7 TIL that airport officials in Bulgaria seized two million baby eels that had been hidden in luggage. The eels, known as elvers, had been declared food items. It’s a critically endangered species and cannot be exported outside the region.
QJJok TIL in modern camel racing, they don't use human riders but robots. It saves weight.
vmnx TIL that China had invented ceramics for teacups so early and they were so satisfied with it, they never had any glass right up until the 19th century. They were therefore left behind right up to the invention of medical science never having: Windows, lights, electronics, telescopes, microscopes etc