A new study projects biodiversity threats if global warming speeds up. Under the most extreme scenarios, about one in three species could be facing extinction by the end of the century.
In a landmark UN study, researchers found nearly half of the world's threatened migratory species have declining populations. More than a fifth of the assessed animals face extinction.
California sea otter populations have rebounded in recent decades. New research finds that by feasting on shore crabs, these otters are helping to protect their coastal marsh habitat against erosion.
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.
A new study of dinosaur eggs, as well as a football-size egg from Antarctica, shows how some ancient creatures relied on soft shells rather than hard ones.
A new book explores how overhunting and habitat destruction have left us with only a fraction of the foods that existed a century ago, and the changes that are needed to preserve our culinary variety.
In the 1980s, there were less than two dozen California Condors left. Today, more than 500 exist in the world, thanks to the efforts of conservationists.