6,913 results
6,913 results for: Bears
- Planetary Science
Cassini snaps icy moon Dione
Saturn's small moon Dione has a heavily-cratered, fractured surface.
- 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.
- Anthropology
Stone Age Footwork: Ancient human prints turn up down under
An ancient, dried-up lakeshore in Australia has yielded the largest known collection of Stone Age footprints, made about 20,000 years ago.
- 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.
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Robo Receptor: Researchers engineer a brain ion channel to take its cues from light
Scientists have engineered an ion channel in nerve cells to open or close in response to light.
- Astronomy
Pay Dirt: Cometary dust collector comes home
A capsule containing dust collected from the comet Wild-2 safely landed in the Utah desert.
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Letters
Cartilage risk I enjoyed Nathan Seppa’s article “Cartilage creation,” (SN: 8/11/12, p. 22) about attempts to generate new cartilage from somatic stem cells. He writes that cartilage evolved “in ancestors who lived shorter lives, carried less body weight and roamed an unpaved world.” Implications: The risk of osteoarthritis increases with age, body weight and impact […]
- Humans
The man behind Sarcastic Rover
NASA’s newest rover, Curiosity, wasn’t alone on Mars for long.
- Tech
Building robots that slither
Howie Choset is a roboticist, but his team’s creations bear little resemblance to C-3PO or R2-D2. Instead, Choset finds inspiration in nature — specifically, snakes.
- Humans
BOOK REVIEW | Naked in the Woods: Joseph Knowles and the Legacy of Frontier Fakery
Review by Davide Castelvecchi.
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Book Review: The Day We Found the Universe by Marcia Bartusiak
Review by Elizabeth Quill.
