Fishing industry threatens to destabilize stocks.

When oil stopped gushing into the Gulf of Mexico, the ecosystems under assault started on a long road to recovery. Amanda Mascarelli meets the researchers assessing their chances.

When oil stopped gushing into the Gulf of Mexico, the ecosystems under assault started on a long road to recovery. Amanda Mascarelli meets the researchers assessing their chances.

Extreme weather wreaks havoc in the rivers.

Extreme weather wreaks havoc in the rivers.

The impact that a newly discovered species makes depends on the completeness of its lineage.

The impact that a newly discovered species makes depends on the completeness of its lineage.

Researchers find that pollutants in Canada's Athabasca River are not from natural sources.

Researchers find that pollutants in Canada's Athabasca River are not from natural sources.

Confounding reports seed confusion over long-term effects of the spill.

Confounding reports seed confusion over long-term effects of the spill.

Antarctic cold snap kills millions of aquatic animals in the Amazon.

Antarctic cold snap kills millions of aquatic animals in the Amazon.

Animals as hidden victims of war are the focus of a groundbreaking initiative.

Genome sequences offer clues on how to be a queen and live a long life.

Genome sequences offer clues on how to be a queen and live a long life.

Cambridge Bay location offers a wealth of opportunities for studying the far north.

Cambridge Bay location offers a wealth of opportunities for studying the far north.

Evolutionary biologists overturn long-held kin-selection theory.

Extensive chemical analysis confirms that undegraded oil remains at ocean depths.