Video: In the rainforests of Central America, a research team studies a skin disease that may be the tipping point for amphibian life on the planet.
As the clock ticks, populations of endangered species decline and threaten the functioning of healthy ecosystems.
Pollution, hunting, habitat degradation, climate change, and invasive species have dealt blows to global biodiversity. Climate change alone is putting one in six species on Earth at risk of extinction, according to a meta-analysis of 131 ...
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2015