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Heating up the weekend with three climate indicators

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Endophytes are microbes that live inside plants — the ones tagged with a fluorescent dye in this image are found in poplars. The microbes gather nitrogen from the air, turning it into a form plants can use, a process called nitrogen fixation. Researchers are looking at how these microbes could be used to help crops like rice and corn make their own fertilizer. Sam Scharffenberger hide caption

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Sam Scharffenberger