Template:Are You Sure/November 24

1961: The Baby Tooth Survey was a study of the deciduous teeth of children as a measurement of the effects of nuclear fallout. The research focused on detecting the presence of strontium-90 in children's teeth. Ultimately, the project collected over 320,000 teeth from children of various ages before the project was ended in 1970. Preliminary results published by the team in the November 24, 1961, edition of the journal Science showed that levels of strontium 90 in children had risen steadily in children born in the 1950s, with those born later showing the most increased levels. The results of a more comprehensive study of the elements found in the teeth collected showed that children born in 1963 had levels of strontium 90 in their baby teeth that were 50 times higher than those found in children born in 1950, before the advent of large-scale atomic testing. The findings helped convince U.S. President John F. Kennedy to sign the Partial Nuclear Test Ban Treaty.

... that philosopher, scholar, and lens-grinder Baruch Spinoza was a pioneer of Enlightenment and modern biblical criticism, notably his modern conceptions of the self and the universe?

... that astronomer Jeremiah Horrocks observed the transit of Venus in 1639?

... that That Was the Week That Was was first broadcast on 24 November 1962?

... that Lee Harvey Oswald, the alleged assassin of President John F. Kennedy, was urdered two days after the assassination, by Jack Ruby, a nightclub operator, in the basement of Dallas police department headquarters, as Oswald was being led by two detectives to an armored car to take him to the nearby county jail?