Colleague recalls Steve Irwin as serious researcher, not just TV star

Twenty years after his death, a crocodile researcher who worked with Steve Irwin recalls his genuine scientific passion and down-to-earth nature.

Why it mattersIrwin's legacy was serious conservation science beyond his TV persona. He spent long nights around campfires discussing how to get the public to care about wild places and dangerous animals.

AustraliaThe Australian wildlife researcher shaped how his country protects crocodiles and wild species through pioneering field research.

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File image: Koala reaching toward eucalyptus leaves in Australian bushland, professional wildlife photography

✓ The Guardian AustraliaPlanet & Environment

Victoria's koala count halved; 43% of those checked in dire welfare

Victoria's koala population halved to 224,800, with 43% of tested koalas in dire welfare.

Why it mattersVictoria's koala crisis is far worse than the appearance of too many koalas suggested. Urgent action is needed in areas where koalas are scarce.