An idea that has been passed around lately as a way of hitting two major birds with one stone — carbon dioxide pollution from industrial activities and food shortages — is diverting carbon dioxide emissions from power plants and factories to greenhouses and algae farms to improve growth rate.
While certainly an intriguing idea to reduce pollution while simultaneously increasing crop yields, do toxic gases in industrial emissions pose a threat to public health by potentially making crops grown using this technology toxic, or is there some element of how plants process these gases that eliminates or at least greatly reduces such risk?
Note: Seeing as this question lives in the intersect of biology and health, I've cross-posted it here.