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TIL that Speed Of Gravity Is Equal To The Speed Of Light

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mx9OR TIL if you hit a pedestrian with your vehicle at 30 miles per hour, there's a 20% chance they will die. At 35 mph, it increases to 50%. And at 40, it jumps to a 90% chance of death.
b9dNp TIL that dogs have evolved to participate in the oxytocin loop with us, the gaze-affected hormone responsible for bonding in human relationships, particularly with babies.
1OL7 TIL that an officer of the California highway patrol ,Sgt. Kevin Briggs, has stopped more then 200 people from committing suicide on the golden gate bridge.
0gZv TIL That when a stretched out slinky is dropped, the bottom stays still in mid air until the two ends meet (Skip to 16 seconds)
R540j Today I Learned about The Science of Copper Manufacturing and How It Goes From an Ore to A Wire.