787 results
787 results for: Mammoths
- Humans
Year in review: Old humans reveal secrets
DNA of the oldest modern humans is rewriting the prehistories of Europe, Siberia and the Americas.
- Ecosystems
Dam demolition lets the Elwha River run free
Removing a dam involves more than impressive explosions. Releasing a river like Washington state's Elwha transforms the landscape and restores important pathways for native fish.
- Animals
Few humans were needed to wipe out New Zealand’s moa
A new study finds that the Maori population was still small when it managed to drive several species of large, flightless birds extinct.
- Tech
Exploding wires open sharp X-ray eye
Using exploding wires to make low-energy X-rays, a novel, high-resolution camera snaps X-ray pictures of millimeter-scale or larger objects—such as full insects—in which features only micrometers across show up throughout the image.
- Ecosystems
Move over, Leo. Give me more elbow room
The average size of the largest land animals on each of 25 oceanic islands and five continents strongly depends on the land area there.
- Astronomy
Martian equator: A watery outpost?
A catastrophic outpouring of water—four times the volume contained in Lake Tahoe—may have gushed from fissures near the equator on Mars as recently as 10 million years ago.
- Astronomy
Repainting the cosmic palette
After all the hue and cry about the color of the universe, astronomers have now revised their findings: It’s not pale green, but boring old beige.
- Archaeology
New World hunters get a reprieve
New radiocarbon evidence indicates that, beginning around 11,000 years ago, human hunters contributed to North American mammal extinctions that had already been triggered by pronounced climate shifts.
- Astronomy
Pluto or bust?
A new National Research Council report may revive plans to send a spacecraft to explore Pluto and its neighborhood.
- Astronomy
Big Smash: Galaxy clusters in collision
Astronomers have unveiled the most detailed image ever taken of the collision of two clusters of galaxies.
- Astronomy
Survey Probes Cosmos from Near to Far
Early reports from the most mammoth sky surveys ever conducted are yielding a trove of findings, including the two most distant quasars known in the universe, new knowledge about the large-scale clumping of galaxies, and more evidence about the size and distribution of asteroids in our solar system.
- Astronomy
Celestial Divide: Finding two families of galaxies
By analyzing data from a mammoth sky survey, astromoners have found that galaxies divide into two distinct families, depending on their stellar mass.
