Vaccines have saved more than 154 million lives worldwide over the past 50 years. World Immunization Week is a timely ...

A "smoky umbrella" blocked the sun's rays and worsened air pollution in New York and New Jersey during the event. Here's how.

Canadian wildfire smoke of 2023 led to the reduction of temperatures in NYC by 3 degrees Celsius, increasing pollutants, and rising health problems, new study finds.