The U.S. Environmental Protection Agency moved this week to reduce limits on fine particulate air pollution, including soot, set by the Biden administration last year. The administration gave up ...

Air Quality Index, or AQI, and PM2.5, particulate matter which measures 2.5 micrometers or less, are not the same thing. But both do refer to how polluted the air is, just in different ways. AQI, an ...

As the national capital enters its harsh winter phase with plunging temperatures and thickening smog, physicians are sounding the alarm on a dual threat to joint health. Over the past two months, ...

PM2.5 refers to particulate matter with a diameter smaller than 2.5 micrometers. These tiny particles, often present in air pollution, can penetrate deep into the lungs and even enter the bloodstream, ...