The oceans’ last chance: ‘It has taken years of negotiations to set this up’

Wildlife in most of the lawless high seas faces an existential threat from fishing, shipping and the military. Next month, a landmark UN conference could finally bring hope

Great Barrier Reef: 30% of coral died in ‘catastrophic’ 2016 heatwave

Report chronicles ‘mass mortality’, the extent and severity of which has shocked scientists
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Wildlife reserve for Antarctica would be world’s largest

Vast 1.8m sq km fishing-free zone would protect species, such as penguins, leopard seals and whales, and help mitigate the effects of climate change

Paris agreement’s 1.5C target ‘only way’ to save coral reefs, Unesco says

First global assessment of climate change impact on world heritage-listed reefs says local efforts are ‘no longer sufficient’

Salmon farming in crisis: ‘We are seeing a chemical arms race in the seas’

Rare only 40 years ago, farmed salmon is now taken for granted in our kitchens. But the growth of the industry has come at great cost

Seven climate records set so far in 2016

Photo of record heat in India

From soaring temperatures in Alaska and India to Arctic sea ice melting and CO2 concentrations rising, this year is smashing records around the world