Dolphins prey on migrating sardines off the coast of South Africa. As waters warm, sardines are delaying their winter migration.

In the sea as on land, climate change is driving shifts in the abundance and distribution of species. Scientists are just beginning to focus on why some fish predators and prey — like striped bass and menhaden on the U.S. East Coast — are changing their behavior as waters warm.

By Andrew S. Lewis

ANALYSIS

In a Major Reversal, the World Bank Is Backing Mega Dams

Despite continued opposition, the World Bank has approved the first of five big dam projects expected to get its support in the coming months. Climate change has upped the need for renewable energy, but the environmental and social costs of building such massive projects remain.

By Jacques Leslie

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A gray wolf in Montana.

Biodiversity

As Wolf Populations Rebound, an Angry Backlash Intensifies

The reintroduction of endangered wolves to Yellowstone National Park 30 years ago was a major conservation victory. But as wolves have spread across the West, anger and resentment at the apex predator has escalated, with hunters in some states increasingly targeting them.

By Jim Robbins

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