763 results
- Life
Humans aided, constrained by fossil fuels
Maintaining long-term population will require alternate energy sources.
- Humans
Neandertal mitochondrial DNA deciphered
Researchers have completed a mitochondrial genome sequence from a Neandertal. DNA taken from a 38,000-year-old bone indicates that humans and Neandertals diverged 660,000 years ago and are distinct groups.
- Humans
From the January 15, 1938, issue
Radio-assisted snowplows, getting to know the "X" particle, and ancient frozen mammoths found in Siberia.
- Psychology
Wave of resilience
Indian survivors of the devastating Asian tsunami employed spiritual and community coping strategies to regain emotional balance
- Humans
Stone Age seafood fans
Excavations in two Gibraltar caves suggest that Neandertals, like modern humans, regularly visited the Mediterranean shore to complement a land-based diet with seafood
- Space
Tiny object points to remote solar system reservoir
Possible comet may be distant visitor from the innermost region of the Oort Cloud, the proposed comet reservoir of the outermost solar system.
- Astronomy
Planck by Planck
The launch of the European Space Agency’s Planck mission, set for late April or early May, will put into orbit a new tool —the microwave equivalent of polarized sunglasses — that may offer a view of the dawn of time.
- Astronomy
Impact may have transformed Mars
Three teams suggest that a huge object slammed into Mars, giving the planet an unusually dualistic topography.
- Physics
Large Hadron Collider
When the Large Hadron Collider powers up this fall, protons moving at almost the speed of light will collide with energies high enough, physicists hope, to solve matter’s biggest mysteries.
- Humans
Letters from the August 18, 2007, issue of Science News
Exhaustive analysis I would debate the “1,000 watts or more” value attributed to typical adults during strenuous exercise (“Powering the Revolution: Tiny gadgets pick up energy for free,” SN: 6/2/07, p. 344). Hiking up steep slopes, I rarely exceed 250 W myself, and typical hikers are going much slower. The 1,000-watt figure can only apply […]
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19839
Rather than concluding that the object that hit Canada 12,900 years ago was a comet, I wonder whether there might not be an alternate reason that geologists haven’t discovered a large hole. If a meteor hit a kilometer-thick glacier, would it have left a crater in the rock underneath the ice? Peter ShorWellesley, Mass. Scientists […]
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Mammoths: Blondes and brunettes?
The wool of woolly mammoths may have come in at least two shades.
