Footage shot from a helicopter showed columns of smoke billowing up from the Gifford Fire in California on Tuesday.

Breathing in polluted air for extended periods of time can pose a serious health risk for people, especially for vulnerable ...

New evacuations have been ordered in Central California as the massive Gifford Fire nears 100,000 acres burned.

The heat dome remains close to Oklahoma into midway through the weekend. Also, wildfire smoke continues to clouds the skies ...