Spring showers stir up tiny pollen particles
Today’s Video of the Day from the National Science Foundation describes why spring allergies may actually intensify after a rain shower, even though rain is expected to clear pollen from the air.
Researchers at the University of Iowa have discovered that spring rainfall stirs up microscopic particles of pollen that linger in the air for hours after rainfall subsides.
The study was funded by the National Science Foundation.
Image Credit: NASA Earth Observatory