Climatologists are telling us that the central and eastern U.S. states are in for a long, hot and smoky summer because of ...

Allergy seasons are getting longer and more intense, and doctors say a mix of pollen, dust and wildfire smoke may be ...

Particle pollution can get deep into the lungs and cause serious health problems such as asthma attacks, heart and lung ...

An air quality alert was issued by the National Weather Service in Denver at 4:11 p.m. on June 18. Air quality alerts are ...

A new Covid-19 variant called NB.1.8.1, or Nimbus, represents about a third of new US Covid-19 cases. Dr. Leana Wen answers ...

Surgical face masks became a symbol of safety during the COVID-19 pandemic. They helped prevent the spread of viruses, ...