Uses different isotopes found within an item to learn something about that item (such as where a person grew up). See 'A Brief History of Climate Change'.
Isotope analysis
Fact of the Day
The cancan was originally a dance for couples, and its first stars were men.
Quote of the Day
"Somme. The whole history of the world cannot contain a more ghastly word.
"
~ Friedrich Steinbrecher (German Officer)
On This Day
1830 The Manchester to Liverpool train line opened, and caused the first train death (of MP William Huskisson).
1859 The great engineer Isambard Kingdom Brunel died.
1916 Tanks were first used on the Somme. They weren't ready for use in combat and many broke down.
1935 The Nuremberg race laws were introduced, stripping German Jews of their citizenship and forbidding them to marry Aryans.
1940 Hitler indefinitely postponed his invasion of Britain following a massive defeat of the Luftwaffe.
2008 The financial services firm Lehman Brothers filed for bankruptcy, the biggest such filing in US history, causing the Dow Jones to drop more than 500 points in a day.