Pregnancy Testing May Have Led to Spread of Deadly Frog Fungus

The 'frog pregnancy test' may have spread a fungus that's decimating amphibian populations.

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An endangered Blue Jeans Dart Frog rests on a leaf at the INBIO Park in Heredia, Costa Rica. A new study suggests tropical are dying out due to animal testing in the 1940's and '50s.

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