Earth

Chemistry

Skin is no barrier to BPA, study shows

The new finding suggests handling store receipts could be a significant source of internal exposure to the hormone-mimicking chemical.

Earth

Arctic lake yields climate record

A Siberian drilling project goes to great lengths to capture an ancient climate record in a 3.6 million-year-old crater.

Humans

BP gusher left deep sea toxic for a time, study finds

In the early weeks after the damaged BP well began gushing huge quantities of oil and gas, a toxic brew was developing deep below the surface in plumes emanating from the wellhead. Finned fish and marine mammals probably steered well clear of the spewing hydrocarbons. But planktonic young — larval critters and algae that ride the currents — would have been proverbial sitting ducks.

Humans

When to welcome ‘invading’ species

As climate changes, some environments are becoming hostile to the flora and fauna that long nurtured them. Species that can migrate have begun to move into regions where temperatures and humidity are more hospitable. And that can prove a conundrum for officials charged with halting the invasion of non-native species, notes Jon Jarvis, a biologist who for the past year has headed the National Park Service.

Paleontology

India yields fossil trove in amber

Insect remains suggest the continent hosted a surprisingly wide variety of creatures 50 million years ago.

Humans

GNP’s glaciers: Going, going . . .

Climate warming will eliminate them within a generation, data indicate.

Animals

Wolverine: Climate warming threatens comeback

BLOG: New data point to unexpected sociability and filial behavior in carnivore.

Life

Climate changes, and there goes the neighborhood

The ranges of rattlesnakes and voles are likely to shift drastically with warming, analyses of past changes suggest.

Earth

‘Fossil’ mountains entombed by ice

Cold temperatures have kept a buried Antarctic range fresh for hundreds of millions of years.

Life

New species a little nipper

A mongoose-like creature from Madagascar is the first new carnivore to be discovered in more than two decades.

Health & Medicine

Mice robbed of darkness fatten up

Time of day can affect calories' impact, a study shows.

Earth

Oceanographers with flippers

Tracking seal dives off Antarctica reveals seafloor troughs that affect ocean circulation.