Uncategorized
- Astronomy
Stellar Question: Extrasolar planet or failed star?
A tiny dot of light next to a young, sunlike star might be the long-sought image of an extrasolar planet.
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To a layman like me, it seems almost impossible that light reflected from a body that lies “much farther from the star than Pluto does from the sun” could be seen from Earth at a distance of 450 light years, when Pluto, only 6 light hours away, reflects so little light to Earth. Peter JemingSeattle, […]
- Health & Medicine
Molecular Switch: Protein may influence chronic-pain disorder
A cell-surface protein found in the nervous system may play a central role in a chronic-pain condition known as neuropathy.
- Anthropology
Untangling Ancient Roots: Earliest hominid shows new, improved face
New fossil finds and a digitally reconstructed skull bolster the claim that the oldest known member of the human evolutionary family lived in central Africa between 6 million and 7 million years ago.
- Physics
Lone protein molecule could tip this scale
A scale-on-a-chip capable of weighing individual, biologically active proteins took a step closer to reality as a minuscule, vibrating bridge detected the mass of a mere 30 xenon atoms.
- Physics
Tense encounters drive a nanomotor
Exploiting the relative strength of surface tension forces in the world of tiny objects, a novel type of nanomotor creates a powerful thrust each time molten metal droplets merge.
- Health & Medicine
Detecting cancer in a flash
Instant identification of cancer cells may become possible following experiments demonstrating that healthy and cancerous cells alter laser light in different, and distinguishable, ways.
- Animals
DNA tells pigs’ tale of diverse ancestry
A genetic study indicates that pigs were domesticated in at least seven different parts of Asia and Europe, not in just two regions, as many researchers had assumed.
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Phages take breaks while ejecting DNA
Bacterial viruses, or phages, inject DNA into their prey in a way that is more complicated than researchers had previously thought.
- Earth
Lightning creates radiation-safe zone
A relatively safe region within the seas of radiation that surround Earth owes its existence to lightning storms.
- Astronomy
Moon story waxes fuller
A new analysis may have put the final piece in the puzzle of how the Moon formed.
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Plants fix genes using copies from ancestors
Some plants can reinstate genes missing from their own chromosomes but that had been carried by previous generations.
