Chemical-munching mussels contaminating Great Lakes

Zebra mussels from the Caspian Sea, introduced to North America by accident, are becoming a veritable plague releasing toxic chemicals into the Great Lakes, Canadian biologists say.

Global warming brings crab threat to Antarctica

The sea floor around the West Antarctica peninsula could become invaded by a voracious king crab, which is on the march thanks to global warming, biologists reported on Wednesday.

Plant remains link farming to landscape damage in Peru

A study of food remains from ancient settlement sites along the lower Ica valley in Peru, confirms earlier suggestions that farming undermined the natural vegetation so badly that eventually much of the area had to be abandoned.

Krill found to have hidden depths

Antarctic krill regularly feed on the seabed, scientists have found. Until now the tiny crustaceans were thought to live mainly near the ocean surface.

Antarctic krill help to fertilize Southern Ocean with iron

A new discovery reveals that the shrimp-like creature at the heart of the Antarctic food chain could play a key role in fertilising the Southern Ocean with iron – stimulating the growth of phytoplankton (microscopic ...

Global research chief sees rice boom in Africa

Subsaharan Africa could double or triple rice yields and one day even export to Asia where urban sprawl and rising sea levels threaten paddies, a global research chief said Monday.

Mediterranean Sea invaded by alien species

More than 900 new alien species have been encountered in the coastal environments of the eastern Mediterranean Sea in recent decades, including the poisonous pufferfish. The invasion of alien species has had the consequence ...

Scientists: Gulf health nearly at pre-spill level

(AP) -- Scientists judge the overall health of the Gulf of Mexico as nearly back to normal one year after the BP oil spill, but with glaring blemishes that restrain their optimism about nature's resiliency, an Associated ...

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