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.