One of the great uncertainties in projecting global warming is accounting for the effects of small particles in Earth's atmosphere. Progress is nonetheless being made with this fiendishly complex problem.
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Penner, J. The cloud conundrum. Nature 432, 962–963 (2004). https://doi.org/10.1038/432962a
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DOI: https://doi.org/10.1038/432962a
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