Major air pollutants have declined in recent decades, but USA TODAY’s analysis shows wildfire smoke is taking their place.
The Roman Empire lowered IQ levels across Europe according to a new study, due to the vast quantities of lead pollution.
Vast forests, desert land and even a volcano are among the landscapes included in what's now the largest corridor of ...
A new law decades in the making could finally lead to the cleanup of some of the thousands of abandoned mines in Colorado ...