The Oversight and Investigations Subcommittee, headed by Rep. Paul Gosar (R-Ariz.), will hold a hearing titled “Unleashing American Energy Dominance and Exploring New Frontiers.” It’s the latest in a ...

PORTLAND, Ore. - A federal agency has authorized the killing of some California sea lions that prey on migrating salmon and steelhead at the base of Bonneville Dam on the Columbia River. The lethal ...

Here's what happens: The plankton eat algae that contains the acid, and then the fish eat the plankton, and the sea lions eat the fish — one thing surviving off another, passing on the toxic acid.

It's known as the "Bonneville Buffet." Below Bonneville Dam, located 40 miles east of Portland, Ore. in the Columbia River Gorge, sea lions, sometimes by the dozens, gather to feed on tightly packed ...

When scientists compared what California sea lions eat in the Channel Islands (U.S.) and the Gulf of California (Mexico), they expected to find a clear explanation for why populations were booming in ...