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Trees reveal the evolution of environmental pollution     2018/09/13 19:20

Chemical analysis of tipuana tree rings and bark by Brazilian researchers shows falling levels of heavy metal pollution in the air of São Paulo City, Southern Hemisphere's largest metropolis.

Blazes of light reveal how plants signal danger long distances     2018/09/13 19:20

Botonists reveal reveal how glutamate, an abundant neurotransmitter in animals, activates a wave of calcium when a plant is wounded -- the best look yet at the communication systems within plants that are normally hidden from view.

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