How to improve the health of the ocean

The Economist: Editor's Picks show

Summary: <p><span style="font-size: 9.5pt; font-family: Arial, sans-serif; color: rgb(34, 34, 34);">The ocean plays a huge role in the climate. It provides 3bn people with at least a fifth of their protein. But humanity treats it with contempt. Better technology, including sensors and drones, will make governing the ocean easier. But the challenge is daunting</span></p>