Snow-white coral of once-vibrant Great Barrier Reef a sign urgent action must be taken | Adam Morton

Plan for net-zero emissions combined with a new diplomatic effort is Australia's best chance at saving reef for future generations

The news is overwhelming and exhausting in a way it has rarely been in most of our lifetimes, but if you have five minutes of energy left this is worth your attention. That it hasn't been reported in most of Australia's major news outlets doesn't make that any less the case.

Across nine days last month, Prof Terry Hughes from James Cook University travelled the length of the Great Barrier Reef in a small plane to survey the health of more than 1,000 individual sites. He was joined by an observer from the Great Barrier Reef Marine Park Authority, a government agency.