What do cycling and rocks have to do with each other?
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U geologist Peter Lippert joins an international team blogging about the geology showcased in each stage of the Tour de France.
Read MoreU geologist Peter Lippert joins an international team blogging about the geology showcased in each stage of the Tour de France.
Read MoreTrees are air quality monitors all around us. U scientists found that magnetic particles on pine needles can indicate levels of air pollution.
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