Save
Email
Print
Share
RSSBrowse News Stories
491 to 500 of 3,696 stories
view headlines only
-
NASA's Landsat Satellites See Texas Crop Circles -- Of the Irrigation Kind
April 28, 2012 — A water-rich polka dot pattern takes over the traditional rectangular patchwork of fields in a series of 40 years of Landsat images. In the dry Texas panhandle near the town of Dalhart, this ... > full story -
Asteroids, Comets and Meteors
Near-Earth Object Impacts
Geology
Earth Science
Atmosphere
Environmental Issues
Tiny 'Spherules' Reveal Details About Earth's Asteroid Impacts
April 25, 2012 — Researchers are learning details about asteroid impacts going back to the Earth's early history by using a new method for extracting precise information from tiny "spherules" embedded in layers of ... > full story -
Splatters of Molten Rock Signal Period of Intense Asteroid Impacts on Earth
April 25, 2012 — New research reveals that the Archean era -- a formative time for early life from 3.8 billion years ago to 2.5 billion years ago -- experienced far more major asteroid impacts than had been ... > full story -
Evolution on an Island: Fossils Show Secret for a Longer Life
April 25, 2012 — Scientists have discovered one of the first fossil-based evidences supporting the evolutionary theory of aging, which predicts that species evolving in low mortality and resource-limited ecosystems ... > full story -
Did Bone Ease Acid for Early Land Crawlers?
April 24, 2012 — Scientists have proposed that the bony structures in the skin of many early four-legged creatures might have been there to relieve acid buildup in bodily fluids. Analysis of their anatomy suggests ... > full story -
Sombrero Galaxy Has Split Personality
April 24, 2012 — While some galaxies are rotund and others are slender disks like our spiral Milky Way, new observations from NASA's Spitzer Space Telescope show that the Sombrero galaxy is both. The galaxy, which is ... > full story -
'Inhabitants of Madrid' Ate Elephants’ Meat and Bone Marrow 80,000 Years Ago
April 24, 2012 — Humans that populated the banks of the river Manzanares during the Middle Palaeolithic fed themselves on pachyderm meat and bone marrow. This is what a new study shows and has found percussion and ... > full story -
Mysterious 'Monster' Discovered by Amateur Paleontologist
April 24, 2012 — For 70 years, academic paleontologists in Cincinnati have been assisted by a dedicated corps of amateurs. One such amateur recently found a very large and very mysterious fossil that has ... > full story -
Did Exploding Stars Help Life on Earth Thrive?
April 24, 2012 — Research by a Danish physicist suggests that the explosion of massive stars -- supernovae -- near the Solar System has strongly influenced the development of ... > full story -
Diversity Aided Mammals’ Survival Over Deep Time
April 23, 2012 — The first study of how mammals in North America adapted to climate change in “deep time” found that families with greater diversity were more stable and maintained larger ranges than less ... > full story
Search ScienceDaily
Number of stories in archives: 137,193
more 
