Nearly half of Americans are breathing in unhealthy levels of polluted air, according to the latest "State of the Air" report ...

The report measures data for six outdoor air pollutants considered dangerous: particulate matter, ozone, nitrogen dioxide, sulfur dioxide, carbon monoxide and lead.

Nearly half of all Americans now live in places with unhealthy air, and the Bay Area metro is among the top 20 in poor air ...

The Environmental Protection Agency fired around 280 staffers and reassigned around 175 others — on Earth Day. The employees were tasked with ensuring that federal policies, grants and ...

Is mercury pollution a real threat to penguins? Here's what scientists have discovered and what mercury is doing to these ...

American researchers - who tracked almost 300 people from pregnancy until they turned 24 - found those who had lived in areas ...

Improvement So Far on Beaches Cleaned for the Second Time by the Athanasios C. Laskaridis Public Benefit Foundation under the ...

Let’s cut through the noise with cold, hard numbers.