Candido Godoi, the tiny town in Brazil made up of German speaking immigrants, hits the news again as researchers continue to probe the cause of an inordinate number of twins among the town's populace. There are 38 sets of twins among the city's 80 families, a fact that has researchers speculating about there being something in the area's water supply, or that infamous Nazi doctor Josef Mengele worked his wiles on the town's citizens before his death in 1979.
http://www.nytimes.com/2009/02/23/world/americas/23twins.html?_r=2