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TIL Scientists discovered what they think are the world's oldest biological colours - they are bright pink. The pigments were discovered after researchers crushed 1.1billion year old rocks in the marine shale deposit beneath the Sahara desert.

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P1nWE TIL in Trigueros del Valle, Spain, animals have the same rights as people since 2015, signifying equal entitlement to life, freedom, and respect, with strict prohibitions against mistreatment or abandonment.
VAND TIL that group “brainstorming” doesn’t work – it makes each individual in the group less creative. “[B]rainstorming groups think of far fewer ideas than the same number of people who work alone and later pool their ideas.”
4kbNw TIL that those "raw" cashews you buy at the store aren't really raw! Truly raw cashews contain urushiol, the same stuff that makes poison ivy so irritating. To make them safe to eat, cashews are steamed, roasted, or boiled to remove the urushiol.
JYeyk TIL the role of "alpha" in primates is not always determined by physical size or strength, but by collecting resources, forming political alliances, and intelligence. Some primates even experience increased stress from being in the alpha role.
8aZeP TIL that when crowds get as dense as 6 or 7 people per square meter, they begin taking on the characteristics of fluids. This can lead to "crowd crushes," where waves propagate through the group and push people into tight spaces, crushing them to death.