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NPR's Ailsa Chang speaks with Dr. Paul Stoffels, chief scientific officer for Johnson & Johnson, about the latest data on the efficacy of the company's COVID-19 vaccine.

You'll see testing in some airports these days — it's just like we're going back in time! And speaking of looking back, the things that protected fliers from COVID then are still a good idea.

NPR asked a handful of public health experts how to approach a holiday season with not one but three respiratory pathogens helping fill hospitals: COVID, the flu and RSV.

The Centers for Disease Control changed its guidelines for isolation and quarantine during this pandemic. Not everyone is sure how to define those terms. Also, not everyone is 100% behind the changes.

A new study finds that smoke from massive wildfires has eroded about a quarter of the air quality gains from the last few decades.

Wildfires worsened by climate change spewed smoke over much of North America this year. It's a new reality Americans haven't yet processed: how dangerous the smoke is for human health.

A "catastrophic" IT systems failure has disrupted roughly 75,000 British Airways passengers' flights since it struck the company Saturday morning. "We profusely apologize," the airline's CEO said.

Seavey, who previously won the Iditarod in 2013 and 2004, became the fastest and the oldest musher to win the race. He also beat his son, defending champion Dallas Seavey.

Photographer John Thackwray captures images of young people in their bedrooms — including in countries in the developing world.

Clifton residents and the Cincinnati Park Board will soon get important data on whether their deer sterilization pilot program is a viable alternative...