› added 1 year ago

69

TIL that persistent anal fissures can technically disqualify you from military service

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via reddit.com

6MnX TIL real scientists conducted a real study to learn that cats do indeed recognize their owners’ voices … but 10,000 years of cohabiting with humans keeps them from giving a damn.
9YXK7 TIL the ice on a hockey rink is painted white to make it easier to see the puck
9wLMr TIL about "Wicked Problems" which is a term in social policy that It refers to an idea or problem that cannot be fixed, where there is no single solution to the problem; and "wicked" denotes resistance to resolution, rather than evil.
X0ZlQ TIL the SR-71 Blackbird used an Astro-inertial navigation system, a special camera pointed at the sky. Its "blue light" source star tracker could see stars day and night and “was good enough to limit drift to 1,000 ft (300 m) off the direction of travel at Mach 3.”
LWkd TIL The cows that make the milk that goes into Ben & Jerry’s ice cream receive massages.