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TIL that the red liquid seeping out of a cooked rare steak isn’t blood. It is in fact a mixture of a protein called ‘Myoglobin’ and water. Myoglobin helps muscle tissue store oxygen and just like Hemoglobin, contains iron that turns red when it binds with oxygen.

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yn0M TIL after invading Greece and receiving the submission of other key city-states, Philip II of Macedon sent a message to Sparta: “If I invade Laconia you will be destroyed, never to rise again.” The Spartan ephors replied with a single word: “If.” Phillip and his son Alexander never tried to invade.
9wKN7 TIL that the Glasgow Ice Cream Wars were violent conflicts in the 1980s involving rival ice cream truck drivers in Glasgow, Scotland. These drivers sold drugs from their trucks and resorted to shootings and arson in turf wars over profitable territories.
a8BoN TIL that Saturn's rings are only 100 million years old, making them younger than the dinosaurs or the Appalachian Mountains.
MexlV TIL In order to open a Taco Bell franchise, Taco Bell requires you to have a minimum net worth of $1.5 million and at least $750,000 in liquid assets.
6Ya8 TIL in 2012 a cat called Pudding saved his owner’s life the same night he was adopted. The owner had a diabetic seizure in her sleep. Pudding brought her back to consciousness, ran into her son’s room and pounced on him until he woke up and called for medical assistance.