432 results
432 results for: grassland
- Humans
Ancient southern Africans took genetic evolution in a new direction
An ancient, shared set of human-specific genes underwent changes in a geographically isolated population after around 300,000 years ago, scientists say.
- Animals
American burying beetles are making a comeback in Nebraska
Thanks to decades of conservation to restore private grasslands, numbers of the threatened insect are on the rise in the Loess Canyons.
- Anthropology
A foot fossil suggests a second early human relative lived alongside Lucy
Foot bones and other fossils have been attributed to Australopithecus deyiremeda, a recently discovered species that may shake up the human family tree.
- Paleontology
Sloths once came in a dizzying array of sizes. Here’s why
A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.
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Megadroughts are on the rise worldwide
One of the most extreme megadroughts has helped fuel wildfires in Los Angeles County and elsewhere in California.
- Climate
A lush, green Arabian Desert may have once linked Africa and Asia
Mineral formations in caves reveal recurring periods of humidity in the Arabian Desert over the last 8 million years.
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- Environment
Fire-prone neighborhoods on the fringes of nature are rapidly expanding
The transition zone where unoccupied wildlands meet developed areas increased globally by about 35 percent from 2000 to 2020.
- Animals
In a first, zebra cams reveal herds on the move with giraffes
Six zebras wore video cameras attached to collars, capturing the equines’ daily life. Sticking with giraffes may let the two species protect each other.
- Climate
As wildfires worsen, science can help communities avoid destruction
Blazes sparked in wild lands are devastating communities worldwide. The only way to protect them, researchers say, is to re-engineer them.
- Environment
Grassland and shrubland fires destroy more U.S. homes than forest fires
Grassland and shrubland fires destroyed nearly 11,000 homes in the contiguous United States from 1990 to 2020.
- Animals
American bullfrogs may be threatening a rare frog species in Brazil
A search for environmental DNA from critically endangered Pithecopus rusticus frogs turned up DNA from invasive American bullfrogs instead.
