› added 9 years ago

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TIL Big steel vessels have a magnetic signature, due to the polarity of electrons lining up to the earths magnetic field when the steel was heated in manufacture through welding etc, and can be used to locate where the vessel was made.

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WrdX TIL of the Toddler’s Truce, where British television stations would stop broadcasting between 6pm - 7pm to allow parents to put their children to bed.
P1WwZ TIL that Forrest Mars Sr., the person who turned Mars, Inc. into a candy empire, retired in 1973 at age 69 in Vegas. Seven years later, he founded Ethel M Chocolates out of boredom. The company would reached annual sales of 150M within a few year, and eventually got acquired back by Mars, Inc.
OG9k6 TIL that long-term comedy partners Dawn French and Jennifer Saunders - who both came from RAF families - lived at the same RAF camps as children, and even shared a best friend. Despite this, they didn't meet until they were in University.
Yp17B TIL the US built a secret nuclear launch facility in Greenland which was kept a secret even from Denmark. When the ice sheet melts, close to 200000 liters of chemical waste will be released in the environment.
J1yM4 TIL Bull sharks are euryhaline and can thrive in both salt and fresh water. They are known to travel far up rivers, and have been known to travel up the Mississippi River as far as Alton, Illinois, about 1,100 kilometres (700 mi) from the ocean