Ancient volcanic eruption destroyed the ozone layer

A catastrophic drop in atmospheric ozone levels around the tropics is likely to have contributed to a bottleneck in the human population around 60 to 100,000 years ago, an international research team has suggested. The ozone ...

Low genetic diversity in two manatee species off South America

Worldwide, marine megafauna are at risk of extinction due to climate change, habitat loss, pollution, overhunting, population fragmentation, and hybridization with related species in areas disturbed by humans. Genetic studies ...

Elephant genetics guide conservation

A large-scale study of African elephant genetics in Tanzania reveals the history of elephant populations, how they interact, and what areas may be critical to conserve in order to preserve genetic diversity for species conservation. ...

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