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A hidden fungus may explain Brazil’s vanishing frogs

For nearly 50 years, scientists have wondered what drove dramatic frog declines in Brazil’s Atlantic Forest. Now, researchers have found compelling evidence that the chytrid fungus arrived around the time the populations collapsed. They tested more than 370 museum specimens from 17 species, finding no infections in samples collected before 1979 and fungus in more than half of those from the 1980s. And here’s the intriguing twist: some species hardest hit showed no detectable infection, so the mystery still has important questions to answer.
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