Large birds once lived across Australia, only to become extinct around the time that giant marsupials and other megafauna died out during the Pleistocene "ice ages".
The "decision science" approach helps avoid unanticipated consequences of programs to bring species such as New Zealand's little bush moa, Waitomo frog, or laughing owl back from extinction.
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.
Cats have a bad reputation as wildlife killers (deservedly so). But dogs aren't off the hook: new research shows domestic dogs have contributed to the extinction of at least 11 species.
The notion of using dingoes to protect Australia's wildlife is based on wolves in the US, but research cast doubts on the link.
The extinction of the giant reptiles, marsupials and birds that once called Australia home has been the subject of much debate, including the role early Australians may have had on their fate.
Are giraffes really facing extinction? The decline of these beloved animals - and many others – has been hidden in plain sight as Africa builds ever more roads, railways and cities.
As Donald Trump prepares to enter the White House, there may be dark days ahead for some of the world's rarest and most beautiful primates.
Researchers are planning to monitor orange-bellied parrot nests all summer to make sure they raise chicks successfully.
The jury is in and the debate is over: Earth’s sixth great extinction has arrived.
Is an extinct animal really gone forever?
Large asteroid hits on Earth have the potential to wipe out humanity so knowing how to detect and deflect them is vital. But we know very little about the interior make up of many asteroids.
The Nullarbor is an arid, treeless expanse today. But several hundred thousand years ago it was home to a menagerie of species, including two newly discovered giant cuckoo-like birds.
Human activity doesn't just reduce biodiversity – new research explores how we are continually creating new species and ecosystems, too.
Australia’s conservation laws presume that we can preserve everything in its natural state. But in a changing world, we'll have to be more flexible than that.
The Earth is full of many varied species from the largest mammals to the tiniest organisms. But we now think there could be ten times more species than was originally thought.
New research reveals that mammals didn't wait for the dinosaurs to die out before starting their rapid spread.
How did survivors of the Permo-Triassic Mass Extinction adapt to their new, harsh environment? And why is that knowledge so important for modern species?
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.