An orca in Arctic waters.

Killer whales have begun to migrate farther into previously icy regions of the Arctic, preying on narwhal, beluga, and bowhead. Scientists say their increasing numbers could shift food webs in ways that affect both endangered whale populations and subsistence Inuit hunters.

By Ed Struzik

Climate

In Vermont, a Push to Prevent Flooding or Get Out of the Way

An increase in extreme precipitation events has hit the tiny, mountainous state of Vermont especially hard. As disaster declarations mount, state officials and community groups are collaborating to restore floodplains, reduce runoff from slopes, and buy out vulnerable homes.

By Jonathan Mingle

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A mountain lion in Montana.

WILDLIFE

Deadly Encounter: Mountain Lion Attacks Spark Controversy

A mountain lion attack that killed a young California man last year has reignited a debate over how the big cats should be managed. Some are calling for renewed hunting of the animals, while others are advocating nonlethal methods of instilling a fear of humans in the big cats.

By Jim Robbins

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