Previous work in 2013 found that bees in the lab could be confused by the effects of diesel pollution. (sciencedaily.com)
With worries mounting about diesel pollution in particular, hopes were high that last week's budget would tackle this head - on. (newscientist.com)
He also wants to establish a goal of zero diesel pollution by 2030, in part by funding clean technology that can swap in for dirty diesel engines. (sfchronicle.com)