More than 91 percent of the world's population lives in areas that exceed air quality guidelines recommended by the World Health Organization, and more people are impacted by worsening air quality each year. 

It's time for a more nuanced approach to prioritizing COVID-19 vaccinations as more contagious variants become prevalent and a third wave of infections threatens to overwhelm hospitals in some provinces, according to an analysis published today in the Canadian Medical Association Journal.

Tracking carbon dioxide levels indoors is an inexpensive and powerful way to monitor the risk of people getting COVID-19, according to new research from CIRES and the University of Colorado Boulder. 

A recent study finds that unhealthy eating behaviors at night can make people less helpful and more withdrawn the next day at work.

This research builds on a USGS report published in 2017, with the new study including additional groundwater samples and focusing on previously underrepresented areas.

Bad news for allergy sufferers: The rising temperatures over the past three decades have impacted the onset, duration and intensity of the pollen season in Switzerland.

Nalleli Cobo was nine years old when her nose started bleeding, off and on throughout the day, and often into her pillow at night.

New research published today in the journal Environmental Health Perspectives from Environmental Defense Fund and the George Washington University shows air pollution takes an enormous toll on health in the San Francisco Bay Area, and the impacts vary dramatically within neighborhoods.

A study conducted at the University of Campinas (UNICAMP) in the state of São Paulo, Brazil, shows that compounds produced by gut microbiota (bacteria and other microorganisms) during fermentation of insoluble fiber from dietary plant matter do not affect the ability of the novel coronavirus SARS-CoV-2 to enter and replicate in cells lining the intestines. 

India has set ambitious targets for renewable power, with plans to quintuple its current wind and solar energy capacity by 2030.