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Tim Radford – Drought as the New Normal for the US West

One way or another, humans are to blame for the catastrophic drought in California that scientists say may be emerging as a “new normal”.

Either humans have mismanaged the state’s water, or human-triggered global warming has begun to help turn America’s landscape of wine and roses into a dustbowl, according to two new studies.

And the arguments have relevance extending far beyond the US west, as the European Drought Observatory has warned that much of mainland Europe is now caught up in the continent’s worst drought since 2003.