Proceedings of the National Academy of Sciences

The U.S. withdrawal from the Paris Agreement is prompting more than 1,400 mayors to make their own pledges.
A new study on human cooperation could shed light on why some take radical steps.
Onboard aggressiveness may be tied to class distinction, group dynamics, and destination. Today may be a good time to fly
The South American polka dot tree frog gives off an "intense greenish-blue glow" under UV light, scientists say.
I was sitting yesterday in Starbucks with a close professional friend and we were discussing 'being hungry' at work. Now
A recent peer-reviewed study published in the Proceedings of the National Academy of Sciences has confirmed what many fracking critics have argued for years: hydraulic fracturing for oil and gas can contaminate groundwater.
Another sign that climate change is a major contributor to the drop-off is the large increase in oaks, a tree the researchers
"I can understand why some people have concerns about it, and my coauthors and I are very sorry for the way the paper described
The Los Angeles Times covered the study Monday evening: The Environmental Protection Agency is significantly underestimating
A recent groundbreaking study led by Chinese and American scientists, published in the Proceedings of the National Academy of Sciences (PNAC), documents how pollution from US- outsourced manufacturing in China blows back to California and the West Coast.