Scientists look to solve ozone threat to Africa’s food security

ABERGWYNGREGYN, Wales – Plant scientist Felicity Hayes checks on her crops inside one in all eight tiny domed greenhouses set in opposition to the Welsh hills. The potted pigeon pea and papaya planted in spring are leafy and inexperienced, quickly to bear fruit.

In a neighboring greenhouse, those self same crops look sickly and stunted. The pigeon pea is an aged yellow with pockmarked leaves, whereas the papaya bushes attain solely half as tall.