air pollution
February 8, 2024
Foul fumes pose pollinator problems
Scientists at the University of Washington have discovered that nighttime air pollution — coming primarily from car exhaust and power plant emissions — is responsible for a major drop in nighttime pollinator activity. Nitrate radicals (NO3) in the air degrade the scent chemicals released by a common wildflower, drastically reducing the scent-based cues that its chief pollinators rely on to locate the flower. The findings, published Feb. 9 in Science, are the first to show how nighttime pollution creates a chain of chemical reactions that degrades scent cues, leaving flowers undetectable by smell. The researchers also determined that pollution likely has worldwide impacts on pollination.
November 27, 2023
Breathing highway air increases blood pressure, UW research finds
A new study from the UW found that unfiltered air from rush-hour traffic significantly increased passengers’ blood pressure, both while in the car and up to 24 hours later.
