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Morning Rundown: Election Day caps roller coaster campaign, Russia accused of
plot to plant bombs on cargo planes, and the big hurdle facing women's pro
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MACH


KEEPING EARTH ALIVE: HOW PHOTOSYNTHESIS IS ESSENTIAL TO OUR SURVIVAL

01:37
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Humans depend on plants for survival – they help provide us with food, fuel,
medicine, oxygen, and so much more. And plants’ survival depends on one
incredible natural process: Photosynthesis. Here’s how it works.April 22, 2018

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 * WHY LEAVES CHANGE COLOR: THE SCIENCE OF FALL FOLIAGE
   
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