Why are China’s coastal fish farms disappearing while India’s are expanding?

China’s coastal aquaculture ponds are shrinking due to environmental policies while India’s are expanding at the fastest rate of any country, according to a new bird’s-eye view of fish farms worldwide. The conclusions are based on a fresh dataset compiled from millions of satellite snapshots of coastal aquaculture around the world in 2022. From 1990 to 2016, the global pond area for aquaculture expanded rapidly. After 2017, the overall area declined, but changes varied between countries. The...