A new report from the US Centers for Disease Control and Prevention found that Covid-19 cases among younger children remained low even after schools restarted for in-person learning. To safely reopen schools, however, transmission in communities must be kept in check.

It has long been understood that being physically active is good for you, particularly when it comes to preventing things like heart attacks and strokes.

Snake-haters, look away -- and, whatever you do, don't look up.

Plastic will be the likely calling card of our time on Earth when modern sites are excavated by future researchers. And plastic is leaving its mark at historic sites as well, according to a new study.

People who meet their partners on dating apps often have stronger long-term relationship goals -- contrary to the idea that technology encourages casual encounters rather than commitment, a new study has found.

Orchids are often thought of as beautiful, delicate and vibrant -- but a newly identified plant might just change your mind.

Nearly 180,000 children in the United States were diagnosed with coronavirus infections from November 26 to December 10, bringing the cumulative total to over 1.6 million US cases since the pandemic began, the American Academy of Pediatrics said Tuesday.

The mysterious head injuries suffered by US diplomatic staff in China and Cuba that had been described as "sonic attacks" are consistent with the use of directed microwave energy, according to a report published Saturday by the National Academy of Sciences.

A new study published Monday suggests the novel coronavirus was infecting people across the US as early as December -- a month before the first person known to have been infected with coronavirus arrived in the US from China on January 15.