Efforts to clean up air pollution in China and across East Asia may have inadvertently contributed to a spike in global warming, a new study has found.

BEIJING BEIJING — Skyscrapers in Beijing disappeared into the haze and air quality plummeted as China’s capital was enveloped in a dust storm and heavy pollution on Friday.

Skyscrapers in Beijing have disappeared into the haze and air quality plummeted as China’s capital is enveloped in a dust storm and heavy pollution.

Skyscrapers in Beijing have disappeared into the haze and air quality plummeted as China’s capital is enveloped in a dust storm and heavy pollution.

BEIJING (AP) — Skyscrapers in Beijing disappeared into the haze and air quality plummeted as China’s capital was enveloped in a dust storm and heavy pollution on Friday. Concentrations of the ...