The Ohio zoo welcomed a sea lion cub, giraffe calf, two red panda cubs and a baby siamang gibbon in the space of a month.
A government-backed report said the iconic species is threatened by ongoing habitat loss and may disappear without "urgent" intervention.
As Africa's wildlife reserves have emptied of tourists and curtailed patrols, opportunistic poachers are storming parks and other protected areas.
The death of OR-54 in California has been called a "tragic development" by environmentalists.
The new rule would cement 2017 guidance that protects energy companies and other entities from being prosecuted for unintentionally killing birds.
Species are being wiped out at a terrifying rate. Ending the crisis requires swift global action.
Diego has had one very busy life, helping to save the Chelonoidis hoodensis from extinction.
The U.S. Fish and Wildlife Service and an environmental organization offered money in a bid to crack the tough case.
Experts estimate that fewer than 80 Sumatran rhinos remain on Earth, most of them in Indonesia.
An Amazon forest protest, record smog in India, and a rare endangered frog round out this week's best images.