fish

The wild and scenic Rogue River has become even wilder with the demolition of a dam that had hindered passage of salmon, steelhead and other fish to their spawning grounds.

Abandoned mercury mines in California are polluting the state's major waterways, rendering fish unsafe to eat and risking the health of at least 100,000 people.

The basic makeup of the ocean waters off the Northeast and the mid-Atlantic region has fundamentally changed in the past 40 years, according to a new report.

A federal study finds mercury in every fish tested at nearly 300 streams across the country, a finding that underscores how widespread mercury pollution has become.

Nearly all species have some ability to detect light. At least three types of cells in the retina allow us to see images or distinguish between night and day.

Now, researchers have discovered in fish yet another type of cell that can sense light and contribute to vision.

The joke is no longer on Cleveland, with fish, jet skis, kayakers and boaters returning to the river that caught fire and helped spur the national environmental movement.

The Supreme Court has upheld a U.S. government permit to dump waste from a gold mine in the state of Alaska into a nearby lake, even though all its fish would be killed.

Fish don't make noises or contort their faces to show that it hurts when hooks are pulled from their mouths, but a researcher believes they feel that pain all the same.

Fish caught near wastewater treatment plants serving five major U.S.