Five years after the first cases of COVID-19 were reported, the World Health Organization is still reporting deaths from the virus. More than 3,000 people died in the last month, adding to the more ...

I spoke to a community group in October. I started with a question: What season is it? Holidays offer a good clue to the season, but it can be confusing.

Chikungunya, a painful mosquito-borne disease once mostly confined to tropical regions, could now be transmitted across large parts of Europe as rising temperatures caused by climate change allow the ...

Viruses, wildfires, emissions from manufacturing...the list of natural and man-made airborne contaminants is long. Our air quality is affected by nearby environmental factors, as well as ripple ...

Cold and flu viruses can live on surfaces for a few hours to days. Hard surfaces, like stainless steel and plastic, can keep ...

As the coronavirus spread, researchers worldwide scrambled to find ways to keep people safe. Some efforts were misguided. Others saved millions of lives. By Apoorva Mandavilli Until 2020, few ...

Scientists were slow to recognize that Covid spreads through the air. Some are now trying to get ahead of the bird flu. By Carl Zimmer Carl Zimmer has reported on pandemics since 2009 and is the ...

Norovirus is an extremely contagious “vomiting bug” that spreads through food, water, and surfaces contaminated with tiny particles of vomit or fecal matter. Symptoms include diarrhea, vomiting, ...

University of Toronto researchers have uncovered how bacterial viruses protect their progeny in order to maximize their reach. The phenomenon, described in a study published in Nature, relies on viral ...

This research comes as many mosquito-borne viruses are spreading rapidly. Zika virus and dengue virus are very close relatives. Both are mosquito-borne flaviviruses, and both specialize in infecting a ...

As plastic pollution worsens worldwide, scientists are uncovering a new and unsettling possibility. Tiny airborne fragments of plastic, known as micro- and nanoplastics, may do more than pollute the ...

Add Yahoo as a preferred source to see more of our stories on Google. This summer’s historic outbreak of trillions of saltmarsh mosquitoes has left Florida residents swatting, scratching, and in some ...