Authorities in Australia are facing criticism after culling hundreds of sickly koalas via helicopter-riding snipers last week, likely killing healthy mothers in the process and leaving joeys orphaned, ...

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 ...

Cute but cantankerous, koalas are making a surprising recovery from a genetic bottleneck, with their once most-threatened ...