Oops! The episode is no longer available but you can find other episodes below.Back to PBS News HourWatch PBS News Hour Episodes Onlineplay_circle_filledHow massive wildfires in the West spread harmful particles across North Americaplay_circle_filledSinaloa cartel head 'El Mayo' arrested after flying to the U.S.play_circle_filledWhy French authorities fear Russia may attempt to disrupt Paris OlympicsmoreWATCH IN APPplay_circle_filledchevron_leftchevron_rightComments