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TIL the Rosetta Stone was a tax document outlining the tax exempt status of a temple.

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7rMmp TIL the colored beads in Silica Gel packets are a humidity indicator. If the beads are blue or orange the silica gel can still adsorb more moisture. If the beads are pink or green, then the silica gel is spent and can adsorb no more moisture.
NXAl6 TIL the Walt Disney Company tried to trademark the name “Seal Team 6” the day after the raid that killed Osama bin Laden.
PXyg TIL that as of 2003, there were between 50 and 100 people in the US who had nuclear-powered pacemakers.
kJ6Am TIL there is no clean unit of weight measurement that makes up an ounce. Less than an ounce is commonly reverted to the metric system (28.35 g = 1 oz.)
bvJQ TIL that after needing 13 liters of blood for a surgery at the age of 13, a man named James Harrison pledged to donate blood once he turned 18. It was discovered that his blood contained a rare antigen which cured Rhesus disease. He has donated blood a record 1,000 times and saved 2,000,000 lives.