One-Fifth of the Global Population Risks Malnutrition As Fish Stocks Decline

Coral reefs are under tremendous pressure from climate change, ocean acidification, and overfishing. A growing number are bleached a deathly white. This year has seen the worst global coral bleaching event since 1998, Nick Graham, a marine ecologist at Lancaster University, told me. (Coral bleaching happens when the water warms and colourful algae, called zooxanthellae, dies off. The coral dies if it gets bad enough.)

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