A new global assessment of the world's amphibians finds that more than 2 of every 5 known species is at risk of extinction. Habitat loss, disease and climate change are the main drivers.
The most significant part of the U.N. pact is a commitment to protect 30% of land and water considered important for biodiversity by 2030, up from 17% of terrestrial and 10% of marine areas.
The influential and sometimes controversial Harvard professor first made his name studying ants. He later broadened his scope to the intersection between human behavior and genetics.