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 ...

MELBOURNE, Australia (AP) — A regulator has approved a world-first vaccine to protect koalas from chlamydia infections, which are causing infertility and death in the iconic native species that is ...

Add Yahoo as a preferred source to see more of our stories on Google. Koalas are an endangered species. This was not always the case, as the wild, adorable marsupials were once widespread across the ...

Koalas are an endangered species. This was not always the case, as the wild, adorable marsupials were once widespread across the Australian continent. However, over the last two centuries, ...