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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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ygQp TIL that the first US Army emergency chocolate ration was designed to taste “only a bit better than ‘a boiled potato’” to keep soldiers from eating their emergency rations in non-emergency situations
X01ak TIL of the Antikythera Mechanism, a device discovered from a shipwreck in Greece. It has a calendar, star charts, planetary alignments, moon phases, etc. It is estimated to be created in first or second century BC.
mxXMx TIL that 1.) cannabinoids such as THC and CBD protect hemp and marijuana plants from UV rays much like sunscreen protects human skin from UV rays and 2.) the sails that carried European colonizers across the world are made from the hemp fiber.
Qjwe TIL Humans and dogs are the only animals to understand the concept of pointing with the index finger for the purpose of indicating an item or person. Dogs are also better at reading human body language than monkeys.
b9b1j TIL On August 10, 1519, the Spanish expedition departed from Sevilla in search of the Spice Islands. This voyage resulted in the first circumnavigation of Earth. The expedition was composed by 5 ships: Trinidad, San Antonio, Concepción, Victoria and Santiago, under Ferdinand Magellan's command.