420 results
420 results for: grassland
- Environment
Down with Carbon
Scientists are exploring strategies for capturing carbon dioxide and storing it safely away in order to limit the levels of that greenhouse gas in the atmosphere.
- Humans
Letters from the March 31, 2007, issue of Science News
On the hoof Do cows and other domestic-herd animals really emit more methane than bison and other wild-herd animals emitted before people came along? Do grass, alfalfa, and other pasture plants remove less carbon dioxide than do forests? There were open grasslands before pastures replaced some forests. I hope the people who are researching these […]
- Archaeology
La Brea del Sur
Excavations at tar pits in Venezuela suggest that the fossils found there may rival those of the famed Rancho La Brea tar pits in Southern California.
- Earth
The Big Dry
Parts of Australia have suffered from severe drought for more than a decade, and people, vegetation, and animals are feeling the heat.
- Anthropology
Red-Ape Stroll
Wild orangutans regularly walk upright through the trees, raising the controversial possibility that the two-legged stance is not unique to hominids.
- Earth
China’s deserts expand with population growth
Carried forward by winds and sandstorms, the dunes of northern China are expanding at an unprecedented rate, primarily because of human activities that have contributed to erosion.
- Earth
Limited Storage: Lack of nutrients will constrain carbon uptake
Even though the carbon dioxide in Earth's atmosphere acts as a fertilizer for plants, the planet's vegetation won't be able to sequester large amounts of that greenhouse gas in the long term because it will quickly run out of other nutrients.
- Humans
From the August 1, 1936, issue
A destroyer revealed, light linked to chlorophyll, and hemoglobin analyzed.
- Ecosystems
Life Underfoot: Microbial biodiversity takes surprising twist
When it comes to numbers of bacterial species, rainforest dirt is virtually a desert, but desert dirt bursts with biodiversity.
- Earth
A Little Less Green?
Emerging data indicate that use of pyrethroid pesticides, even by home owners, poses significant environmental risks.
- Anthropology
South American Surprise: Ancient farmers settled in Uruguay’s wetlands
The discovery of a 4,200-year-old farming settlement in Uruguay challenges traditional notions of where early South American societies took root.
- Math
Life on the Scales
A mathematical equation helps explain life processes on all biological scales, from molecules to ecosystems.
