Koalas were officially declared endangered Friday in eastern Australia. This comes as the marsupials continue to fall prey to chlamydia and lose their habitats to land clearing and climate change.

A heartwarming discovery of an endangered koala and her young joey nestled in the treetops has excited ecologists and conservationists in New South Wales, Australia. The pair was spotted on the ...

A stretch of highway in Australia is a “roadkill hotspot” for koalas with nearly 150 of the endangered marsupials killed in just one year, scientists have warned in a new study. Koalas are struck and ...

Australia approved and funded a vaccine to protect koalas against chlamydia as part of its repopulation efforts for the endangered species. Koalas used to populate Australia in the millions, but many ...

Veterinary assessments of French Island's koalas are underway as part of DEECA and Parks Victoria's long-term management of ...

In a world first, a vaccine has been approved to protect Australia’s endangered koalas from infection and death caused by chlamydia. Developed by the University of the Sunshine Coast, the vaccine’s ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

The Associated Press on invasive species and flooding It's not as immediately noticeable as, say, fallen trees or washed away roads, but the spread of invasive species after floods may be just as ...

A pair of endangered right whales that made several surprise appearances off Florida's west coast this winter have returned to their feeding grounds in the North Atlantic. "After taking a nice little ...