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  1. California from drought to deluge

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    The dramatic switch from extreme drought to severe flooding in California, and the accompanying flip from atmospheric ridge to trough in the northeastern Pacific, exemplifies the pathways to an intensified water cycle under a warming climate.
  2. Aligning climate policy with finance ministers' G20 agenda

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    There is no longer a choice between climate policy and no climate policy. G20 finance ministers have to play a key role in implementing smart climate policies like carbon pricing. Yet they remain reluctant to take advantage of the merits of carbon pricing for sound fiscal policy.
  3. Money for climate

    A judicious use of financial instruments today could protect the well-being of future societies but investment and ambition needs to rapidly increase to achieve this outcome.
  4. Soil carbon: A leaky sink

    Ambitious greenhouse–gas emissions cuts are needed to limit the global mean annual temperature increase to 1.5 °C above preindustrial levels. A study now finds that the land sink for CO2 appears much smaller than is currently factored into climate models, suggesting that emissions cuts may need to be even more ambitious than currently estimated.
  5. A road map for global environmental assessments

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    Increasing demand for solution-oriented environmental assessments brings significant opportunities and challenges at the science–policy–society interface. Solution-oriented assessments should enable inclusive deliberative learning processes about policy alternatives and their practical consequences.