Germany’s Chancellor Angela Merkel urged greater efforts to clean up New Delhi’s toxic air as she pledged one billion euros to help Indian cities switch to green transport. Merkel became a rare foreign leader to speak out on India’s smog crisis after being exposed to the capital’s air on Friday, when authorities said the pollution had reached “emergency” levels. Schools were ordered closed until Tuesday and all construction halted, while Delhi authorities started distributing millions of anti-pollution masks to children. The same day, Merkel went on a ceremonial parade in the city with Prime Minister Narendra Modi on Friday as the smog intensified. Neither leader wore masks.