Tribesman on the Indonesian island of Papau have long been using the gandarusa plant to keep them from getting their wives pregnant.
hat-tip to Sheila Schilling-Kreutner
http://www.omg-facts.com/Science/An-Indonesian-Tribe-Has-Found-An-All-nat/57882?utm_source=Facebook&utm_medium=Social&utm_campaign=Facebook-231435026494&utm_content=FBPagePost
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