Cooling might take the edge off the peak of a planetary fever, or perhaps buy time as emissions cuts begin to have the desired effects.

ECONOMIST: Geoengineering

And the desired effects are spoken in the statistics.

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The rest came from a long series of experiments that created the ecosystem effects it desired. iTunes originally allowed consumers to play CDs and rip them to mp3s to be played on their iMac.

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At Bristol University, researchers led by Matt Watson, a professor of geophysics, are trying to determine which particles would have the maximum desired impact with the smallest likelihood of unwanted side effects.

NEWYORKER: The Climate Fixers