California Gov. Jerry Brown speaks before signing an agreement with 11 other international states and provinces to limit the increase in global average temperature to below two degrees, in Sacramento, California May, 2015.

California Gov. Jerry Brown speaks before signing an agreement with 11 other international states and provinces to limit the increase in global average temperature to below two degrees, in Sacramento, California May, 2015.

Credit:

Max Whittaker/Reuters

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EnvironmentClimate ChangeEnvironmentLivable Planet
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United StatesCaliforniaJerry Brown#COP21Climate Change