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Waves Lapping, Birds Singing: Nature's Sounds Bring Healing, Study Finds

If you feel recharged after a day spent in the great outdoors, there's a physiological reason for that.

Bird song and lapping waves combat negative feelings such as annoyance and stress, while boosting positive emotions and health, according to new research using the sounds found at U.S. national parks.

"It's good for what we're calling positive affect, so things like feelings of t...

Global Warming Could Make Survival in Tropics Impossible: Study

Limiting global warming to targets proposed in the Paris Agreement could keep tropical regions from reaching temperatures that are beyond human tolerability, a new study projects.

Researchers estimate that if countries are able to cap warming at 1.5 degrees Celsius above pre-industrial levels, the tropics will be spared temperatures that surpass the "survival limit." But life in the worl...

Sperm Samples May Help Predict Autism Risk in Offspring

Biomarkers in sperm may help identify men at risk of fathering children with autism, researchers say.

For the study, investigators examined sperm epigenetics -- the molecular processes that affect gene expression -- in 13 men who fathered sons with autism and 13 who had children without the disorder.

The American and Spanish researchers focused specifically on DNA methylation, a che...

Lockdowns' Benefits for Air Quality Weren't as Big as Thought: Study

Two types of air pollution declined in cities around the world during initial COVID-19 lockdowns, but one type increased, a new study finds.

Researchers assessed changes in levels of nitrogen dioxide, ozone and fine particulate (PM2.5) air pollution during lockdowns in 11 cities: Beijing and Wuhan in China; Milan; Rome; Madrid; London; Paris; Berlin; New York; Los Angeles; and Delhi, Indi...

Which Seafood Has the Highest Amount of Microplastics?

Those mussels, oysters and scallops on your plate may come with a secret ingredient: microplastics.

Researchers at Hull York Medical School and the University of Hull in the United Kingdom reviewed more than 50 studies (from 2014 to 2020) to investigate the levels of microplastic contamination globally in fish and shellfish.

The investigators found that mollusks (such as clams, muss...

Some Talc Products Contain Asbestos: Study

Nearly 15% of talc-based cosmetic products analyzed in a recent study contained asbestos.

Environmental Working Group (EWG) -- an American advocacy nonprofit that commissioned the tests and did the analysis -- said methods used by the cosmetics industry to screen talc supplies are inadequate. The voluntary testing method developed by industry is not sensitive enough to screen for asbestos...

Women's Exposure to Solvents at Work Tied to Autism in Children

Children of mothers who are often exposed to solvent chemicals in the workplace appear to have an increased risk of autism, a new study finds.

The study of almost 1,000 families can't prove cause and effect, but researchers report that mothers of autistic children had more frequent exposure to solvents than mothers of children without autism. Overall, moms exposed to solvents were 1.5...

9/11 Dust Linked to Prostate Cancer in First Responders

A possible link between World Trade Center dust and prostate cancer in first responders has been found by researchers.

Exposure to dust at the New York City site after the Sept. 11, 2001, terrorist attacks triggered chronic inflammation in the responders' prostates, which may have contributed to their cancer, according to the Mount Sinai Health researchers.

They noted that i...

Average American Ingests 70,000 Bits of Microplastic Each Year

Extremely tiny bits of plastic: They're in your food and drink, and even in the air around you.

Now, new research calculates that the average American consumes more than 70,000 particles of these "microplastics" every year -- and even that's likely an underestimation, the scientists noted.

Your microplastic intake might be even higher if you choose products that have more pl...