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141

TIL more than 50% of Earth is unmapped

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4kp0X TIL Early drones were developed during the First World War. These radio controlled planes were primarily for target practice but by 1942 a drone with a built in TV camera was capable of delivering a torpedo to a ship 20 miles from the controller.
XENA6 Today I learned that the handkerchief on a stick (that is seen in movies carried by hobos to carry their stuff) is called a bindle.
KOYyG TIL Almost All Calico Cats are Female
ZpG4G TIL there used to be an award for Typography in film
ne4Ld TIL there are 68 animal and plant species considered ‘extinct in the wild’ and only exist in zoos, aquariums or botanical gardens.