Uncategorized
- 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.
-
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.
-
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.
- Planetary Science
Dusty rejuvenation
The Mars rover Spirit recently had its dirty solar arrays cleaned off, possibly by a dust devil, allowing the craft to generate nearly as much energy as it did when it first landed on the Red Planet in January 2004.
- Humans
Letters from the April 9, 2005, issue of Science News
Big ideas Your article “Life on the Scales” (SN: 2/12/05, p. 106) reminded me that taking a bird’s song and transposing it down four octaves makes it sound like a whale’s song. The opposite is also true. To hear this, go to http://www.mind.net/music/birdwhaleDemo.mp3. Todd BartonAshland, Ore. The article would imply that the only anomaly to […]
