ScienceDaily: Top News |
- A bad biology grade sticks around
- Circadian rhythms control body's response to intestinal infections
- Even with defects, graphene is strongest material in the world
- Facebook profiles raise users' self-esteem and affect behavior
- New technique alleviates painful bone metastases, study suggests
- Fatigue and sleep linked to Major League Baseball performance and career longevity
- Elevated carbon dioxide making arid regions greener
- Elite athletes often shine sooner or later -- but not both
- The scoop on bird poop: Evolving diversity of microbial life in bird guts
- 'Population census' of galaxies buried in dust
| A bad biology grade sticks around Posted: 31 May 2013 10:27 AM PDT Researchers have found that a low grade in a pre-requisite biology class predicts future student performance.  |
| Circadian rhythms control body's response to intestinal infections Posted: 31 May 2013 10:26 AM PDT Circadian rhythms can boost the body's ability to fight intestinal bacterial infections, researchers have found.  |
| Even with defects, graphene is strongest material in the world Posted: 31 May 2013 08:47 AM PDT Engineering researchers demonstrate that graphene, even if stitched together from many small crystalline grains, is almost as strong as graphene in its perfect crystalline form. This resolves a contradiction between theoretical simulations, which predicted grain boundaries can be strong, and earlier experiments, which indicated they were much weaker than the perfect lattice.  |
| Facebook profiles raise users' self-esteem and affect behavior Posted: 31 May 2013 08:47 AM PDT A Facebook profile is an ideal version of self, full of photos and posts curated for the eyes of family, friends and acquaintances. A new study shows that this version of self can provide beneficial psychological effects and influence behavior.  |
| New technique alleviates painful bone metastases, study suggests Posted: 31 May 2013 07:55 AM PDT A high-dose of ultrasound targeted to painful bone metastases appears to quickly bring patients relief, and with largely tolerable side effects, according to new research.  |
| Fatigue and sleep linked to Major League Baseball performance and career longevity Posted: 31 May 2013 07:55 AM PDT Two new studies show that fatigue may impair strike-zone judgment during the 162 game Major League Baseball season, and a MLB player's sleepiness can predict his longevity in the league.  |
| Elevated carbon dioxide making arid regions greener Posted: 31 May 2013 07:54 AM PDT Scientists have long suspected that a flourishing of green foliage around the globe, observed since the early 1980s in satellite data, springs at least in part from the increasing concentration of carbon dioxide in Earth's atmosphere. Now, a study of arid regions around the globe finds that a carbon dioxide "fertilization effect" has, indeed, caused a gradual greening from 1982 to 2010.  |
| Elite athletes often shine sooner or later -- but not both Posted: 31 May 2013 07:54 AM PDT A new study that compared the performance of elite track and field athletes younger than 20 and those 20 and older found that only a minority of the star junior athletes saw similar success as senior athletes. The researchers think physical maturation is behind the disparity, with athletes who mature early reaping the benefits early, seeing their best times, jumps and throws at a younger age than Olympians, many of whom mature later.  |
| The scoop on bird poop: Evolving diversity of microbial life in bird guts Posted: 31 May 2013 07:52 AM PDT Gut bacteria are known to have a central role both in human and in animal health. Animals acquire different bacteria as they age but how the microbial communities in the bodies of wild animals change over time is not well understood. Scientists have examined the gastrointestinal bacteria of chick and adult black-legged kittiwakes. Surprisingly, the microbial assemblages of chicks and adults generally differ greatly, with only a few types of bacteria in common.  |
| 'Population census' of galaxies buried in dust Posted: 31 May 2013 07:52 AM PDT Conventional research on distant galaxies have been carried out mainly with visible light and near infrared light. However, it is possible that many galaxies in the universe have been overlooked as much of that radiation is largely absorbed by cosmic dust. That is why millimeter and submillimeter wave observations are important. Stellar light absorbed by dust is reradiated from the dust as millimeter/submillimeter waves. Therefore galaxies, even those which it has not been possible to observe with optical telescopes, can be detected using these wavebands.  |
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