Rising carbon emissions could make vital food crops from wheat to rice less nutritious and endanger the health of hundreds of millions of the world's poorest, scientists say.
Many protected areas fall short, according to a report in the journal Science led by researchers at the University of Queensland in Australia.
The bank assessed 67 developed, emerging and frontier markets.
As Beijing reported big improvements in air quality last year, nationwide gains were much more muted as industrial activity shifted away from the capital.
Among the regions rated as “excellent” were the cities of Beijing and Shanghai.
Energy officials insist national development necessitates continued reliance on coal-fired power plants, but opponents say the cost is too high.