A drying climate and the arrival of people together finished off Australia's megafauna.
Do animals have their own culture? A researcher studying the culture of whales argues that they do. She says understanding that may be one way to save them from extinction.
Death is inevitable for individuals and also for species. With help from the fossil record, paleontologists are piecing together what might make one creature more vulnerable than another.
As much as one-third of animal species in the tropics could be eradicated if their habitats continue to be converted for monoculture farming. We can all do something to make a difference.
Giraffe populations have declined by more than a third over the past 30 years. Two wildlife law experts explain the protections that would come with including them on a US list of endangered species.
New research reveals that mammals didn't wait for the dinosaurs to die out before starting their rapid spread.
More than 90% of Madagascar's lemurs face extinction. Losing them will mean a loss of the valuable function they serve to the forests in which they live.