CLOUDS and aerosols have long been two of the more mysterious forces in the climate. They sometimes warm and sometimes cool the Earth. The net effect, it was thought, was that they offset part of the overall warming trend, which would have been greater had it not been for their influence. But the details were obscure.They still are, but much less so. Scientists' improved understanding of clouds and aerosols is, says Piers Forster of the University of Leeds, "the most interesting development sinc...
CLOUDS and aerosols have long been two of the more mysterious forces in the climate. They sometimes warm and sometimes cool the Earth. The net effect, it was thought, was that they offset part of the overall warming trend, which would have been greater had it not been for their influence. But the details were obscure.They still are, but much less so. Scientists' improved understanding of clouds and aerosols is, says Piers Forster of the University of Leeds, "the most interesting development sinc...
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