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TIL one of the earliest cetaceans was land-dwelling and had four long legs.

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epBVk TIL general anesthesia works in single celled microbes
ZKR4 TIL in 1986 a power plug was developed to standardize European sockets. Brazil adopted this plug to increase compatibility with the European market, in the end they were the only ones to adopt it.
DQYgv TIL there are people who can sleep less, be more productive and physically fit and overall healthy
8aZDV TIL - In certain cancer cases acute secondary infection causes the immune system to destroy the cancer leaving the patient free of that cancer for life. At least one doctor named William Coley developed a therapy to recreate this scenario under controlled conditions.
yVP08 TIL the US and New Zealand are the only 2 countries that allow direct-to-consumer drug advertising, and that 70% of TV-advertised drugs have "low therapeutic value"