It also activates a small power supply which runs little humidifier modules, which turn water into a visible vapor for a fun smoke effect. It doesn’t really imitate tire smoke, since it ...

WASHINGTON (CNN)-- The pervasive smoke spewing from the junk heap at Balad Air Force Base in Iraq is causing many returning troops to be concerned about the effects on their long-term health.

By Adeel Hassan and Hilary Howard A vast wildfire burning across southern New Jersey is generating clouds of toxic smoke that have ... yourself from the harmful effects of air pollution.