Health & Science

Now omicron is estimated to account for nearly all the virus circulating in the nation.

A Dec. 28 letter says Tower failed to provide Chester County Emergency Medical Services with “accurate, ongoing communication.”

Sleep — we all need it, but most people aren’t getting enough of it. Ideally, we spend about a third of our lives asleep. When we’r ...

For a Philadelphia physician, rest seemed out of the question during the early part of the pandemic. But she learned an important lesson about the need to slow down.

It's a sibling of the first omicron variant that swept the world. Is it more contagious? Does it cause severe disease? Will it keep current omicron surges going? Researchers a

Canyon Atlantic Partners LLC is asking a Chester County judge to put a pause on Tower Health’s closure of Brandywine and Jennersville hospitals.

Officials said the funds will help address the critical need to boost a skilled labor force in Philadelphia as the life sciences industry grows.

The mandate is first taking effect first in jurisdictions that didn’t challenge the requirement in court.

A new study finds tiny leaks from loose fittings added up to more emissions than when stoves were in use. The impact amounts to the same effect as a half-million cars.

The company announced Wednesday that the first participant had received a dose. Earlier this week, competitor Pfizer began a similar study of its own reformulated shots.

COVID-19 numbers are down 75% from two weeks ago, suggesting the winter surge has peaked. But the pandemic is not over, officials warn.

Republicans' faith in science is falling as Democrats rely on it even more, with a trust gap in science and medicine widening substantially during the COVID-19 pandemic.

The roughly 7 million Americans who are immunocompromised — including many people with disabilities — live with a much higher risk of COVID, and near-constant vigilance.

Conservationists are concerned the plan would lead to overharvesting, and threaten the endangered red knot bird, which relies on horseshoe crab eggs for sustenance.