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Shanghai, with its chic cafes, glitzy shopping malls and organic health food shops, is emblematic of improving quality of life for China's urban middle class. Yet while the city's veil of smog has lifted slightly in recent years, its water pollution crisis continues unabated - 85% of the water in the city's major rivers was undrinkable in 2015, according to official standards, and 56.4% was unfit for any purpose.

The Madhya Pradesh government in India spearheaded an environmental campaign last weekend in which some 1.5 million volunteers planted 66 million trees in 12 hours along the banks of the Narmada River. India, the world's third-largest generator of carbon emissions, has committed under the Paris Agreement to increase its forests by 12% by 2030.

Technology is being developed to reduce water use in dyeing but the use and abuse of water to dye clothing continues

"The effect of long-term warming is to make it harder to count on snowmelt runoff in wet times," said David S. Gutzler, a climate scientist at the University of New Mexico. "And it makes the dry times much harder than they used to be."