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Climate Change Is Likely to Cause Allergy Misery for Millions

The number of Europeans suffering from ragweed allergies could double by 2050.
An electron-microscope view of pollen from common plants.
An electron-microscope view of pollen from common plants.William Crochot/Dartmouth

Want to know what pollen season could be like in a hotter world? Imagine standing under this tree and trying to breathe:

YouTube: High Pollen Count - Tree sheds clouds...