About 71 percent of the Earth is covered by water, and most of that is ocean. Only 2.5 percent is fresh water, and only a fraction of that—1 percent—is easily accessible. The world’s population of 7.6 billion is expected to grow to 9.8 billion by the year 2050, which means by that year, more than […]
from HBR.org http://j.mp/2I47oYd
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