Un análisis químico de una área puede determinar cuánta contaminación hay en el aire. Pero hay un método mucho menos costoso que podría ayudar a las comunidades más pobres.
A chemical analysis of an area can find out how much pollution is in the air. But there's a much less expensive method that could help poorer communities.
Government can regulate air quality. But some policies on smoke might be self-defeating.
The public's focus eventually turned away from the 2010 disaster. Scientists, however, are still learning the scale of the devastation.
Researchers have a cheap, easy way for cleaning up oil spills: letting plants do the work. Why isn’t it used more often?