RT @TheEconomist: Groundwater, which is the source of drinking water for half of Americans, has become dangerously depleted. In parts of Arizona and California pumping is exceeding the rate at which aquifers are naturally replenished https://t.co/wHqBIOwNGv
RT @TheEconomist: Groundwater, which is the source of drinking water for half of Americans, has become dangerously depleted. In parts of…
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