While pollen is known to seed the next generation of trees and plants, a new study has suggested that it might also seed clouds.

The tiny grains, about a millionth of an inch across, might cause rain by helping clouds to collect water, say scientists. The findings suggest that these wind-carried capsules of genetic material might affect our planet’s climate in an unknown way.

The research, by the University of Michigan and Texas A&M and published in Geophysical Research Letters, highlights a fresh link between plants and the atmosphere, the Daily Mail reports.

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