› added 1 year ago

103

TIL that there are at least 5 species of shark living in the Thames estuary (which runs through London), and that one of those species is venomous.

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YPQB TIL Lt James Launders is the only submarine commander in history to have engaged and destroyed an enemy submarine during time of war using only his own un-aided vessel while both ships were fully submerged
Z8BEa TIL that Leonardo Da Vinci invented ball bearings - a friction-reducing part without which no modern machinery would be possible
0wB1p TIL Katharine Hepburn is the only person to win an Oscar for portraying a relative. She was a direct descendant of Eleanor of Aquitaine, who she portrayed in The Lion in Winter and won best actress. Eleanor had been dead for more than 750 years when Hepburn played her.
RxW6 TIL the German V-2 Rocket developed in 1944 was the first man-made object to enter space. Also the team which developed the V-2 were the key to land the first man on the moon.
WknGN TIL by dry weight, the human brain is nearly 60% fat. And of that 10-20% is DHA (omega-3).