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Tag: Proceedings of the National Academy of Sciences of the United States of America

Crude oil causes developmental abnormalities in large marine fish

Study shows Deepwater Horizon oil disrupts heart development in tunas Crude oil from the 2010 Deepwater Horizon disaster causes severe defects in the developing hearts...

Lawns across America: Is the US becoming one shade of green?

Boston and Baltimore. Miami and Minneapolis. Phoenix and Los Angeles. Fanned across the United States and in locations from coast to prairie to desert, what...

Natural selection has made Europeans lighter over past 5,000 years

Ancient DNA from archaeological skeletons shows that Europeans had darker skin, hair, and eye pigmentation 5,000 years ago There has been much research into the...

An extinction in the blink of an eye

MIT researchers find that the end-Permian extinction happened in 60,000 years — much faster than earlier estimates. The largest mass extinction in the history of...

Researchers build nonflammable lithium ion battery

In studying a material that prevents marine life from sticking to the bottom of ships, researchers have identified a surprising replacement for the only...

How do polar bears stay warm? Research finds an answer in...

In the winter, brown and black bears go into hibernation to conserve energy and keep warm. But things are different for their Arctic relative, the...

Mosquito sperm have a sense of smell

Mosquito sperm have a “sense of smell.” This unexpected discovery is reported in an article published in the online early edition of the Proceedings of...

In the brain, the number of neurons in a network may...

Last spring, President Obama established the federal BRAIN Initiative to give scientists the tools they need to get a dynamic picture of the brain...

Fin to limb: Fossil research offers major advance in study of...

Scientists may be close to unraveling one of the longest-standing questions in evolutionary biology — whether limbs, particularly hind limbs, evolved before or after...

The internal clock and feeding rhythm set the pace of the...

Living organisms have adapted to the day-night cycle and, in most cases, evolved a "circadian clock" – that is: an actual cellular metronome –...

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