Earth

Earth

Feds up estimates of BP-spill rate

At a news briefing on June 10, Marcia McNutt, who chairs the National Incident Command’s brain trust of experts calculating the likely release rate of the ongoing Gulf of Mexico oil spill, pegged the best available estimates at between 20,000 and more than 40,000 barrels per day.

Earth

Ancient marine reptiles losing their cool

Warm-bloodedness may help explain the creatures’ evolutionary success, a new study suggests.

Earth

Gulf gusher is far and away the biggest U.S. spill

As cleanup efforts progress, scientists try to track missing oil roaming below the surface.

Earth

BP oil isn’t the only source of Gulf’s deep roaming plumes

During a June 8 briefing for reporters, a NOAA science officer described deep strata of water tainted with oil identified during a recent cruise in the Gulf of Mexico. The presumption was that anything they found would be plumes of oil spewed by the jet of hydrocarbons emanating from the BP well head. But the chemical fingerprinting of diffuse undersea clouds of oil at one sampling site was “not consistent with BP oil,” he pointed out.

Earth

Possible snake shortage looms

Declines among species in Europe and Africa raise herpetologists’ worries of widespread population losses.

Climate

With warming, some commercial fish may boom and bust

Higher temps in Arctic waters might be good for some species but not for others, new research suggests.

Planetary Science

Before the Mississippi, minerals show ancient rivers flowed west

Michigan zircons uncover the path of an ancient river system across North America.

Earth

Hazy antidote to a faint young sun

A new theory suggests atmospheric answer to the continuing paradox of why early Earth wasn’t icy.

Animals

Diversified portfolio yields benefit for salmon stocks

Local diversity keeps sockeye from going bust every few years, a study finds.

Archaeology

Jamestown settlers’ trash confirms hard times

Analyses of discarded oyster shells confirm a deep drought during the Virginia colony’s earliest years.

Ecosystems

Honeybee death mystery deepens

Government scientists link colony collapse disorder to mix of fungal and viral infections.

Paleontology

Octopus origins

After examining more than 90 new specimens of Nectocaris pteryx, paleontologists put it near the root of the cephalopod evolutionary tree.