Template:Are You Sure/November 24

1961: The Baby Tooth Survey was a study of strontium-90 in the deciduous teeth of children as a measurement of the effects of nuclear fallout. Preliminary results 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. Later, a more comprehensive study 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?