Europe's produce at stake in Spain's water war

Spanish farmer Juan Francisco Abellaneda's salads and watermelons fill the shelves of European supermarkets winter and summer. But maybe not for much longer.

A new approach to assessing policies in the climate crisis

Abruptly melting ice sheets, the collapse of coral reefs and rainforests: nature is complex—and climate policy must consider physical "tipping points" as well as uncertainties and measurement problems. How can the fight ...

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