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Global Warming Pollen

Hoodlum Weeds on a 'Fevered' Planet

Linda Marsa | Posted 09.28.2013 | Science
Linda Marsa

Hotter weather coupled with higher concentrations of carbon dioxide in the air prompt allergens like ragweed to grow larger and produce more pollen, and the carbon-enriched pollen is more noxious and damaging because it contains more of the chemicals that cause allergic reactions.