6,745 results
- Earth
Blast Survivors: Fragments of asteroid found in ancient crater
Pieces of an asteroid that blasted a 70-kilometer-wide crater in southern Africa millions of years ago may have been found intact inside the thick layer of once-molten rock that the impact left behind.
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- Planetary Science
Red Planet Express: Mars spacecraft traces a watery tale
A Mars-orbiting spacecraft has provided new details about when and where liquid water existed on the planet.
- Earth
New Estimates of the Shark-Fin Trade
A new study of the Asian fish market yields a disturbing estimate of how many sharks are killed each year to satisfy demand for a pricy Asian soup.
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Inherit the Warmer Wind
The genetic makeup of organisms ranging from fruit flies to birds appears to be changing in response to global warming.
- Archaeology
From prison yard to holy ground
Archaeological excavations at a prison near Megiddo, Israel, have unearthed the remains of what may be one of the region's oldest Christian churches.
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Grown-Up Connections: Mice, monkeys remake brain links as adults
Two new studies offer a glimpse of extensive remodeling of nerve connections in the brain's outer layer, or cortex, during adulthood in mice and monkeys.
- Animals
Why Play Dead?
Common wisdom dictates that playing dead discourages predators, but researchers are now thinking harder about how, or whether, that strategy really works.
- Archaeology
Stone Age Britons pay surprise visit
Estimated to be roughly 700,000 years old, stone tools recently unearthed along England's southeastern coast are the earliest evidence of human ancestors in northern Europe.
- Planetary Science
Cassini snaps icy moon Dione
Saturn's small moon Dione has a heavily-cratered, fractured surface.
- Earth
Tiny Bubbles: Oldest evidence yet for methane makers
Analyses of the gases dissolved in water trapped in ancient minerals suggest that methane-generating microbes have been around almost 3.5 billion years.
- Health & Medicine
Got Data? Consuming calcium, dairy doesn’t keep off weight
Dairy products and other calcium-containing foods don't prevent weight gain, according to a 12-year study of middle-aged men.
