Frog chytrid fungus

Biologist Jorge Guerrel puts a tiny Toad Mountain harlequin frog into a plastic bag for weighing and measuring on the slopes of Panama's Cerro Sapo March 26, 2011. The endangered frog is likely to be wiped out in the wild by the imminent arrival of frog chytrid, a fungus that has decimated amphibian species across the globe in recent decades.

Credit:

Sean Mattson/Reuters

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