Posts Tagged 'Proceedings of the National Academy of Sciences of the United States of America'

Globe-trotting pollutants raise some cancer risks 4 times higher than predicted

CORVALLIS, Ore. — A new way of looking at how pollutants ride through the atmosphere has quadrupled the estimate of global lung cancer risk from a pollutant caused by combustion, to a level that is now double the allowable limit recommended by the World Health Organization.

The findings, published this week in the Proceedings of the National Academy of Sciences Early Edition online, showed that tiny floating particles can grow semi-solid around pollutants, allowing them to last longer and travel much ...

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Sarah DeWeerdt – Cities Are Driving Rapid Evolutionary Changes to Plant and Animal Species

Cities are driving rapid evolutionary changes to plant and animal species, according to a study published yesterday in the Proceedings of the National Academy of Sciences.

Usually, we think of evolution as happening in remote, isolated, or pristine places—the Galapagos Islands, for example. But the new findings suggest that scientists can’t understand evolution as it’s currently occurring without grappling with the complex and expanding urban landscape.

An international team of researchers searched the scientific literature for data on changes in the ...

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UTHealth: Rapid population decline among vertebrates began with industrialization

HOUSTON – (Dec. 15, 2016) – Rapid population decline among vertebrate species began at the end of the 19th century when industrialization was at its peak, according to researchers at The University of Texas Health Science Center at Houston (UTHealth) and the Chinese Academy of Sciences. The research was recently published in Proceedings of the National Academy of Sciences.

“Industrialization is the most natural explanation as to why we have rapid population decline in that period of time. It has to ...

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JON AUSTIN – Are we about to be told Chemtrails are REAL? Harvard says emissions could SAVE the Earth

Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have identified an aerosol that could be used for “solar geoengineering” to cool the planet, while repairing ozone damage at the same time.

In a new study, published in the Proceedings of the National Academy of Sciences, the scientists said injecting light-reflecting sulphate aerosols into the stratosphere would cool the

planet, but there is a risk of damaging the ozone layer which protects us from harmful UV rays ...

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Live long and … Facebook?

Is social media good for you, or bad? Well, it’s complicated. A study of 12 million Facebook users suggests that using Facebook is associated with living longer — when it serves to maintain and enhance your real-world social ties.

Oh and you can relax and stop watching how many “likes” you get: That doesn’t seem to correlate at all.

The study — which the researchers emphasize is an association study and cannot identify causation — was led by University ...

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The current state of psychobiotics

Now that we know that gut bacteria can speak to the brain—in ways that affect our mood, our appetite, and even our circadian rhythms—the next challenge for scientists is to control this communication. The science of psychobiotics, reviewed October 25 in Trends in Neurosciences, explores emerging strategies for planting brain-altering bacteria in the gut to provide mental benefits and the challenges ahead in understanding how such products could work for humans.

Psychobiotics is a recent term. While it’s ...

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Julie M. Rodriguez – Millions of Trees Are Dying Across the US

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 the Americas.

The effect is particularly apparent in mountain states like California, where 66 million trees have simply ...

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Millions of Trees are Dying Across the US

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 the Americas.

The effect is particularly apparent in mountain states like California, where 66 ...

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The Larger The City You Live In, The More Magnetic Particles Enter Your Brain

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 to come from the iron naturally found in our bodies, derived from food.

Now a closer look at their structure suggests the ...

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Nika Knight – Linking Alzheimer’s to Pollution, Study Finds ‘Abundant’ Toxic Nanoparticles in Human Brains

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 want to have because it is particularly toxic there.”
—Professor Barbara Maher,
Lancaster UniversityThis latest ...

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