The region has added dozens of turbines off the East Coast since last summer. They and other clean energy sources cut the need for oil power amid recent hot weather.
New research complicates the long-held belief that climate policy is a trade-off between cost and carbon, adding a third factor: it might make daily life better, too.
With the river in freefall, federal officials plan to intervene, possibly imposing large cuts to water usage in seven states. Effects would be felt beyond the West.
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