Below you'll find a list of all posts that have been tagged as “Proceedings of the National Academy of Sciences of the United States of America”
Throughout the U.S., trees are dying at an astonishing rate. The reasons for the die-off vary from location to location — drought, disease, insects and wildfires — but the root cause in many of these cases is the same: climate change. The epidemic is even threatening the oldest white oak tree in America, a 600-year-old giant in New Jersey that predates Columbus’ visit to …
Throughout the U.S., trees are dying at an astonishing rate. The reasons for the die-off vary from location to location — drought, disease, insects and wildfires – but the root cause in many of these cases is the same: climate change. The epidemic is even threatening the oldest white oak tree in America, a 600-year-old giant in New Jersey that predates Columbus’ visit to …
Can traffic fumes go to your head? Ultra-fine particles of metal in exhaust gases fly up our noses and travel into our brains, where they contribute to diseases associated with the central nervous system, and the more congested the city, the bigger the problem. Iron nanoparticles were already known to be present in the brain — but they were thought …
Toxic magnetic nanoparticles from air pollution have been discovered in “abundant” quantities in human brains, according to a new study. The study, published Monday in the Proceedings of the National Academy of Sciences (PNAS), is particularly alarming because other research recently raised the strong possibility of a link between such particles and Alzheimer’s disease. “Magnetite in the brain is not something you …
Neuroscientists at the University of Pittsburgh have identified the neural networks that connect the cerebral cortex to the adrenal medulla, which is responsible for the body’s rapid response in stressful situations. These findings, reported in the online Early Edition of the journal Proceedings of the National Academy of Sciences (PNAS), provide evidence for the neural basis of a mind-body connection. Read more
It’s no secret that we have trashed, poisoned, and warmed oceans at an unprecedented rate via human-caused climate change and pollution. It seems that oceans may be paying us back in kind, according to a new study that found levels of bacteria responsible for life-threatening illnesses spiking in the North Atlantic region. The study published Monday in the Proceedings of the National Academy of …
Climate-related disasters heighten the risk of conflict around the world, according to new research. Armed violence is likely to rise amid drought, heatwaves, and other crises, particularly in countries that are already fractured along ethnic lines, finds anew report from Germany’s Potsdam Institute, published Monday in theProceedings of the National Academy of Sciences. Analyzing data on armed conflict from 1980-2010, …
A new study has yielded a radically different picture of aging in America, finding that how old you are plays little or no role in determining differences in health and well-being. The researchers say the results suggest the medical community is focusing on the wrong set of factors to determine risk of dying. Rather than rely on a checklist of …
Zero-tolerance policies are ineffective in combating bullying, an independent government advisory group says in urging schools to take a more preventative approach that includes teaching tolerance to address this “serious public health problem.” In a report released Tuesday, the National Academies of Sciences, Engineering, and Medicine said bullying should no longer be dismissed as merely a matter of kids being …
BLOOMINGTON, Ind. — Earth could contain nearly 1 trillion species, with only one-thousandth of 1 percent now identified, according to a study from biologists at Indiana University. The estimate, based on the intersection of large datasets and universal scaling laws, appears today in the Proceedings of the National Academy of Sciences. The study’s authors are Jay T. Lennon, associate professor in the …
