Penguin colonies are collapsing because global warming, pollution and over-fishing are damaging their ocean habitat in the southern hemisphere, a researcher at the University of Washington said.

WASHINGTON - Floodwaters loaded with farm runoff are heading down the Mississippi River, and scientists fear the deluge will dramatically increase this summer's dead zone in the Gulf of Mexico, covering an area the size of Maryland.

Ninety years of industrial-scale overfishing has brought us to the brink of an ecological catastrophe and deprived millions of their livelihoods.

Air pollution from power plants and automobiles is destroying the fragrance of flowers and thereby inhibiting the ability of pollinating insects to follow scent trails to their source

The pollination of crops by bees is responsible for a third of the food produced in the US.

Wild bee populations around the UK are experiencing "catastrophic declines", the Bumblebee Conservation Trust has warned.

The sudden collapse of the central California chinook salmon fishery has prompted federal fisheries managers to consider closing this year's salmon-fishing season from northern Oregon to the Mexican border.