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Using Biomarkers from Prehistoric Human Feces to Track Settlement and Agriculture
November 26, 2012 — Geoscientists have used a biomarker from human feces in a new way to establish the first human presence, the arrival of grazing animals and human population dynamics in a ... > full story -
Saber-Toothed Cats and Bear Dogs: How They Made Cohabitation Work
November 6, 2012 — The fossilized fangs of saber-toothed cats hold clues to how the extinct mammals shared space and food with other large predators 9 million years ... > full story -
Eliminating Sagebrush May Hurt Rather Than Help Wildlife
October 10, 2012 — Efforts to enhance wildlife habitat by controlling vegetation could actually cause more harm than good. Wyoming big sagebrush is often manipulated to decrease its density and encourage the growth of ... > full story -
How to Restore Native Grasslands in the Interior Pacific Northwest, U.S.
October 4, 2012 — Weed scientists in Oregon have found that the timing of herbicide application along with reseeding of native grasses offers the best recipe for restoring native grasslands while controlling invasive ... > full story -
Satellite Imagery Leaves Questions About Forage for Wildlife
September 20, 2012 — Satellite imagery provides a look at vegetation available to grazing mammals but leaves questions about whether the animals have access to a healthy diet, according to a new ... > full story -
Negative Cross-Resistance Helps Scientists Outmaneuver Herbicide-Resistant Weeds
September 13, 2012 — Kochia, a weed that is rapidly becoming more abundant across southern Canadian prairies and the Great Plains of the United States, can reduce crop yields by up to 60 percent. Fighting this weed has ... > full story -
2,4-D Resistance Found in Weeds Could Limit the Herbicide’s Future Usefulness
August 16, 2012 — Even as crops resistant to 2,4-D herbicide are being developed, populations of weeds are also developing a resistance. A 2,4-D–resistant variety of the waterhemp weed has been found, and its ... > full story -
Diversity Keeps Grasslands Resilient to Drought, Climate Change
August 8, 2012 — Grasslands should come out as the winner with increased periods and intensity of drought predicted in the ... > full story -
Preserving an Icon: Impact of Historical Domestic Cattle Hybridization With American Bison Revealed
August 7, 2012 — Plains bison are an iconic symbol of America on everything from coins to state flags. Now scientists are exploring how the cross-breeding of bison with domestic cattle in the late 1800s may still ... > full story -
Soil Moisture and Hot Days Examined Globally
July 17, 2012 — For the first time, scientists in Switzerland have examined globally the connection between soil moisture and extreme heat with measured data. Their study shows that precipitation deficits increase ... > full story
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