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Louis Slotin - Wikipedia, the free encyclopedia

Among the seven observers, two suffered from acute radiation syndrome (Graves and Young) but recovered. Years later, three of the observers eventually died of conditions that are known to be promoted by radiation (Graves of a heart attack 20 years later at age 54, Cieslicki of acute myelocytic leukemia 21 years later at age 55, and Young of aplastic anemia 27 years later at age 64). Although some of those deaths were probably latent stochastic (random) effects of the accident, it is not possible to draw any definitive conclusions from such a small sample set.[17]

Lost city of Heracleion gives up its secrets
http://www.telegraph.co.uk/earth/environment/archaeology/10022628/Lost-city-of-Heracleion-gives-up-its-secrets.html

For centuries it was thought to be a legend, a city of extraordinary wealth mentioned by Herodotus, visited by Helen of Troy and Paris, her lover, but apparently buried under the sea.

Thonis-Heracleion – Legendary Sunken City Discovered
http://blog.world-mysteries.com/strange-artifacts/thonis-heracleion-legendary-sunken-city-discovered/

The city was founded probably around the 8th century BC, underwent diverse natural catastrophes, and finally sunk entirely into the depths of the Mediterranean in the 8th century AD.