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As if harvesting the sun’s energy to sustain life on Earth weren’t enough, the small green organelles and their relatives are involved in a broad range of other tasks, from manufacturing nutrients and signaling stress to fostering plant immunity
COMIC: As it spreads throughout the world, the virus that causes Covid-19 has been changing. Scientists are tracking those changes, hoping to stay one step ahead of worrisome strains.
The slimy stuff has a surprisingly wide array of beneficial biological functions
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