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The multiple challenges of managing large-scale PV wastes demand a proactive approach; the costs of being underprepared or unprepared far outweigh those of early preparation. We must anticipate the ...
Many cities seek to alleviate extreme heat via planting trees. However, the cooling achieved by such programs is debated because previous analyses address scales much smaller than the whole-city scale ...
Review the peer review process, ethics guidelines, and editorial standards at PNAS. Learn what’s needed to publish credible, high-quality research.