426 results
426 results for: grassland
- Archaeology
Horse domestication traced to ancient central Asian culture
New lines of evidence indicate that horses were domesticated for riding and milking more than 5,000 years ago by members of a hunter-gatherer culture in northern Kazakhstan.
- Anthropology
Peking Man fossils show their age
Scientists have pushed back the age of Peking Man, raising questions about whether Homo erectus trekked to eastern Asia in two separate migrations.
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- Earth
Corals, turfgrass and sediments offer stories of climate past and future
Science News reports from San Francisco at the fall meeting of the American Geophysical Union
- Animals
Bird fads weaken sexual selection
There's a new look for a hot male among lark buntings every year.
- Life
Gene linked to commitment-phobia
A common gene variation in men is linked to marital crises and less bonding in a study of more than 500 long-term couples.
- Ecosystems
Prairie Revival
Prairie restoration is attracting interest, but because so little long-term monitoring and comparative studies have been done, researchers are still wondering whether it's really possible to re-create a prairie.
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New World Stopover: People may have entered the Americas in stages
People first reached the edge of the Americas about 40,000 years ago but had to stay put for at least 20,000 years before melting ice sheets allowed them to move south and settle the rest of the continent.
- Math
Communities of Communities of …
A new approach to network theory focusing on the subcommunities within networks may shed light on everything from food webs to terrorist cells. It may even act as an oracle, helping scientists identify connections within a network they haven’t yet seen.
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19873
This article ignored important research by David Tilman and Jason Hill of the University of Minnesota. They found that planting a crop of 18 different native prairie plants grown in highly degraded and infertile soil with little fertilizer or chemicals yielded substantially more bioenergy than a single species in fertile soil. In fact, their crops […]
- Humans
Letters from the November 3, 2007, issue of Science News
Waste not, want not “Cellulose Dreams” (SN: 8/25/07, p. 120) ignored important research by David Tilman and Jason Hill of the University of Minnesota. They found that planting a crop of 18 different native prairie plants grown in highly degraded and infertile soil with little fertilizer or chemicals yielded substantially more bioenergy than a single […]
