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TIL helium can’t be artificially produced and is formed in natural gas wells as ancient uranium decays. The half-life of the most prevalent uranium isotope is billions of years old (older than Earth itself), so helium takes inordinate amounts of time to form.

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7k7Z TIL Guangzhou gets its cat meat from a fringe network of “catnappers” who snatch strays all over the country. Catnappers are paid 10 yuan per head for their catch, allowing them to earn about $30 a night.
kOgK1 TIL a study found that people had empathy for an attacked victim suffering a broken leg, multiple lacerations and unconscious in the following order, most empathy to least empathy: a one-year-old human, a puppy, an adult dog, a 30-year-old man.
EbDo TIL The Malaysian pen-tailed tree shrew subsists on a diet roughly equivalent to 100% beer, drinking the fermented nectar of the flower buds of the bertam plant. This nectar can reach up to 3.8% alcohol content. Despite this, they don’t appear to get drunk.
7DAM TIL that US Marines murdered 24 unarmed Iraqi civilians in response to an IED that killed a Marine in Haditha, Iraq. The Marine Corps reported that 15 civilians were killed by the IED, and 8 ‘insurgents’ were killed in response. Evidence showed this report to be false.
GYgMJ TIL the Krupp company, presently known for kitchen appliances, is a 400 year old German Merchant Dynasty, and was a weapons manufacturer from the Thirty Years' War until the end of WWII.