Ove Hoegh-Guldberg received death threats for his work. He kept fighting anyway – video

Ove Hoegh-Guldberg's pioneering research in the 1990s found increasing sea temperatures would damage the world's coral reefs, killing them faster than they could recover. Hoegh-Guldberg speaks with Guardian Australia about being labelled an alarmist while championing one of the world's richest ecosystems.

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This video is part of Weight of the World: a climate scientist's burden. The series features three pioneering Australian climate change scientists - Graeme Pearman, Lesley Hughes and Ove Hoegh-Guldberg. The series tells the story of how the three scientists made their discoveries, how they came under attack for their science and the personal toll it has taken on them. And importantly, how they stay hopeful.

• See the other pieces in our series Weight of the world: a climate scientist's burden

• Listen to the Weight of the World podcast series

• Watch Graeme Pearman and Lesley Hughes share their stories