(koch industries) is among the worst in toxic air pollution in the entire united states ... and churns out more climate-changing greenhouse gases than oil giants chevron, shell and valero.
(koch industries) is among the worst in toxic air pollution in the entire united states ... and churns out more climate-changing greenhouse gases than oil giants chevron, shell and valero.
global warming:6
the largest human influence has been the emission of greenhouse gases such as carbon dioxide, methane, and nitrous oxide.