An Idea a Day: Supersized Sweet Potatoes

Rising levels of carbon dioxide in the atmosphere may have a silver lining: doubling the size of the sweet potato, the fifth most important food crop in the developing world.

Most studies of the effects of higher atmospheric CO2 on crops have shown rising yields of rice, wheat and soy. The hardy sweet potato is increasingly becoming a staple in Africa and Asia, producing “more edible energy per hectare per day than wheat, rice or cassava”, according to research group the International Potato Center.

Read the rest of this article on the New Scientist website. Illustrated here by Ed J. Brown.