Of the 14 subspecies of brown bear, this is the most endangered.
Javan rhinos are among the most endangered mammals in the world: They live on one island in Indonesia, in the path of tsunamis. Saving them will ultimately require establishing additional populations.
Legislation designed to protect wildlife is being rolled back or ignored in all sorts of ways in all sorts of places, according to a new global database of attacks on green tape.
Biologists have a centuries-old tradition of publishing on rare and endangered species. But poachers are using open-access information to target valuable and fragile new species.
Young orangutans are dependent on their mother's milk for many years and that could have an impact on the survival of the critically endangered species.
Elephants, livestock and grass all play an important role in ensuring the survival of the Hirola - the world's rarest antelope.
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.
Congress is considering proposals to amend the Endangered Species Act. In this roundup we offer views on what's lost when species disappear and the complexities of bringing them back from the brink.
'Doom and gloom' messages about nature are less effective than positive ones. The Lost & Found project tells the stories of creatures thought long gone but eventually rediscovered.
The $4m cost is almost double the anti-poaching budget for South African National Parks.
We aren’t just jostling with each other for beach space. Scuttling, waddling, hopping or flying away from beachgoers all around Australia, wildlife struggles to survive the daily disturbances.
The Galapagos Islands' giant tortoises are one of the world's best examples of evolution. Scientists are pioneering new conservation strategies to save them from extinction and restore their habitat.
We should be building wildlife bridges on the US-Mexico border – not walls.
It's difficult to sort out the conservation 'wheat' from the 'chaff' when too many subspecies are defined.
A new study reveals that just 7,100 cheetahs remain globally, representing the best available estimate for the species to date.
In the world of Harry Potter, beasts are to be protected, not feared. But this concern for monsters is hardly modern.
Computer dating for animals? Finding the right matchup - using DNA rather than personality questionnaires - could help select the best partnerships for captive breeding programs.
As the vaquita porpoise heads towards extinction, new management measures in Mexico still may have missed the point -- affecting not one but two critically endangered marine species.
Scientists think the European eel spawns thousands of miles away in the Sargasso Sea – but no one has ever seen an eel there.
American ginseng, a slow-growing native plant long used in traditional medicine, was abundant in colonial times. Now illegal harvesting and other stresses are pushing it close to extinction.