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At the Apex

A cougar, silent and unseen in the thick understory, is emitting a beacon from its tracking collar. “She’s close, about a hundred meters to the north,” says Beth Orning, a Ph.D. student at Oregon State University. Orning has evidence that cougar No. C216 is raising a litter in this hidden ravine.

Grass-Fed Restoration

John O’Keeffe’s pick-up truck bumps through a landscape of gnarled sagebrush and bunchgrasses near the Nevada border in southeastern Oregon. “This is good sage-grouse habitat,” O’Keeffe tells me, gesturing across a broad horizon toward the Warner Mountains. He should know. O’Keeffe is a leader in sage-grouse conservation, helping to restore the bird’s habitat of native […]

Forecast for Africa

In the summer of 2012, Zachary Dunn climbed onto the roof of a red-brick schoolhouse in Lela, a small village in southwestern Kenya. A crowd of children milled about on the ground, watching him attach a small weather station to the peak. It was the rainy season, overcast and cool enough for a long-sleeved shirt. […]

Capsules of Chemicals

Packaging certain insecticides inside tiny plastic pellets may amplify their toxicity in the environment, a new study suggests. The same chemical used naked — suspended only in water — was significantly less toxic than its capsulated counterpart, researcher Stacy Harper reported recently in the journal Environment International. The chemical in question (a “pyrethroid” whose active […]

Cerebral Songs

Douglas Robinson has “some kind of filing system in his brain that lets him readily access bird vocalizations even when he hasn’t heard them in years.”

Supersinks for Carbon

Keeping greenhouse gases sequestered in the tangled roots and soggy detritus of mangrove forests could be vital to keeping the planet cool enough for habitation, scientists say.