The world's tropical forests, which provide a crucial buffer against climate change, disappeared faster than ever recorded last year, new satellite analysis suggests.

Researchers estimate that 67,000 sq km (26,000 sq mi) of these pristine, old-growth forests were lost in 2024 – an area nearly as large as the Republic of Ireland, or 18 football pitches a minute.

Chlamydia could make koalas extinct. Can a vaccine save them in time?

On the table, unconscious and stretched out on a pillow, Joe Mangy looks deceptively peaceful. The koala's watery, red-rimmed eyes are the only sign of the disease at war with his body.

Tubes snarl out of a mask covering his face as a vet tech listens to his chest with a stethoscope. He is not healing as well as they had hoped.