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Tag archives for grasses

Africa’s Mysterious “Fairy Circles” Explained

Fairy circles—circular patches of bare soil surrounded by a ring of grass—have long mystified scientists. Now there’s an answer.

Buffelgrass Wanted: Dead and Gone

Meg Quinn, of Pima County Natural Resources, Parks and Recreation, talked to me at the recent BioBlitz in the Saguaro National Park about the scourge that’s blighting much of the Sonoran Desert of Arizona — a tough alien grass that’s taken hold and threatening the native ecosystem.