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Saturday, June 21, 2014
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ScienceDaily: Top Science News
ScienceDaily: Top Science News |
- Emperor penguins are more willing to relocate than expected
- Equations reveal rebellious rhythms at the heart of nature
- Swarm reveals Earth’s changing magnetism
- Princess and the Pea? Invisibility cloak prevents an object from being felt
- Jupiter's moons remain slightly illuminated, even in eclipse
- Oldest ever schistosomiasis egg found may be first proof of early human technology exacerbating disease burden
- Strict diet suspends development, doubles lifespan of worms
- New monkey model for AIDS offers promise for medical research
- Seeing the inner workings of brain made easier by new technique
- Limb regeneration: Do salamanders hold the key?
| Emperor penguins are more willing to relocate than expected Posted: 20 Jun 2014 09:04 AM PDT The long-term future of emperor penguins is becoming more clear, thanks to new research showing that the penguins may be behaving in ways that allow them to adapt to their changing environment better than expected. Researchers have long thought that emperor penguins were philopatric, which means they would return to the same location to nest each year. The new research study used satellite images to show that penguins may not be faithful to previous nesting locations.       |
| Equations reveal rebellious rhythms at the heart of nature Posted: 20 Jun 2014 09:03 AM PDT Physicists are using equations to reveal the hidden complexities of the human body. From the beating of our hearts to the proper functioning of our brains, many systems in nature depend on collections of 'oscillators'; perfectly-coordinated, rhythmic systems working together in flux, like the cardiac muscle cells in the heart.  |
| Swarm reveals Earth’s changing magnetism Posted: 20 Jun 2014 08:57 AM PDT The first set of high-resolution results from ESA's three-satellite Swarm constellation reveals the most recent changes in the magnetic field that protects our planet. Launched in November 2013, Swarm is providing unprecedented insights into the complex workings of Earth's magnetic field, which safeguards us from the bombarding cosmic radiation and charged particles. Measurements made over the past six months confirm the general trend of the field's weakening, with the most dramatic declines over the Western Hemisphere.  |
| Princess and the Pea? Invisibility cloak prevents an object from being felt Posted: 20 Jun 2014 07:23 AM PDT In the past years, invisibility cloaks were developed for various senses. Objects can be hidden from light, heat or sound. However, hiding of an object from being touched still remained to be accomplished. Scientists have now succeeded in creating a volume in which an object can be hidden from touching similar to a pea under the mattress of a princess.  |
| Jupiter's moons remain slightly illuminated, even in eclipse Posted: 20 Jun 2014 07:23 AM PDT Astronomers have found that Jupiter's Galilean satellites (Io, Europa, Ganymede, and Callisto) remain slightly bright (up to one millionth of their normal state) even when in the Jovian shadow and not directly illuminated by the Sun. The effect is particularly pronounced for Ganymede and Callisto.  |
| Posted: 19 Jun 2014 05:54 PM PDT The discovery of a schistosomiasis parasite egg in a 6200-year-old grave at a prehistoric town by the Euphrates river in Syria may be the first evidence that agricultural irrigation systems in the Middle East contributed to disease burden, according to new research. Schistosomiasis is a disease caused by several species of flatworm parasites that live in the blood vessels of the bladder and intestines.  |
| Strict diet suspends development, doubles lifespan of worms Posted: 19 Jun 2014 05:54 PM PDT Taking food away from C. elegans triggers a state of arrested development: while the organism continues to wriggle about, foraging for food, its cells and organs are suspended in an ageless, quiescent state. When food becomes plentiful again, the worm develops as planned, but can live twice as long as normal.  |
| New monkey model for AIDS offers promise for medical research Posted: 19 Jun 2014 12:39 PM PDT HIV-1, the virus responsible for most cases of AIDS, is a very selective virus and does not readily infect species other than its usual hosts — humans and chimpanzees — making the search for effective treatments and vaccines for AIDS that much more difficult. In new scientific work, researchers have coaxed a slightly modified form of the HIV-1 virus to not only infect pigtailed macaques, a species of monkey, but to cause full blown AIDS in the primates, a first.  |
| Seeing the inner workings of brain made easier by new technique Posted: 19 Jun 2014 09:53 AM PDT Scientists have improved on their original technique for peering into the intact brain, making it more reliable and safer, researchers report. The results could help scientists unravel the inner connections of how thoughts, memories or diseases arise. When you look at the brain, what you see is the fatty outer covering of the nerve cells within, which blocks microscopes from taking images of the intricate connections between deep brain cells. The idea behind this study was to eliminate that fatty covering while keeping the brain intact, complete with all its intricate inner wiring.  |
| Limb regeneration: Do salamanders hold the key? Posted: 19 Jun 2014 09:52 AM PDT The secret of how salamanders successfully regrow body parts is being unravelled by researchers in a bid to apply it to humans. For the first time, researchers have found that the 'ERK pathway' must be constantly active for salamander cells to be reprogrammed, and hence able to contribute to the regeneration of different body parts.  |
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