ScienceDaily: Top Science News |
- Glaciers cracking in the presence of carbon dioxide
- Singing mice show signs of learning
- Skin hair skims heat off elephants
- New fossils suggest ancient origins of modern-day deep-sea animals
- Sweeping X-ray imaging survey of dying stars is 'uncharted territory'
- Cambrian fossil pushes back evolution of complex brains
- Surprising spiral structure spotted by astronomers
- Extending Einstein's theory beyond light speed
- Nobel Prize in Chemistry 2012: Smart receptors on cell surfaces
| Glaciers cracking in the presence of carbon dioxide Posted: 10 Oct 2012 04:17 PM PDT The well-documented presence of excessive levels of carbon dioxide in our atmosphere is causing global temperatures to rise and glaciers and ice caps to melt. New research has shown that carbon dioxide molecules may be also having a more direct impact on the ice that covers our planet. |
| Singing mice show signs of learning Posted: 10 Oct 2012 02:21 PM PDT Guys who imitate Luciano Pavarotti or Justin Bieber to get the girls aren't alone. Male mice may do a similar trick, matching the pitch of other males' ultrasonic serenades. The mice also have certain brain features, somewhat similar to humans and song-learning birds, which they may use to change their sounds, according to a new study. |
| Skin hair skims heat off elephants Posted: 10 Oct 2012 02:21 PM PDT Body hair in mammals is typically thought to have evolved to keep us warm in colder prehistoric times, but a new study suggests that it may do the opposite, at least in elephants. Epidermal hair may have evolved to help the animals keep cool in the hot regions they live in, according to new research. |
| New fossils suggest ancient origins of modern-day deep-sea animals Posted: 10 Oct 2012 02:21 PM PDT Fossils discovered in North Atlantic Ocean reveal ancestry of sea urchins and related species. |
| Sweeping X-ray imaging survey of dying stars is 'uncharted territory' Posted: 10 Oct 2012 11:14 AM PDT The death throes of dying stars are the focus of a sweeping new survey using NASA's Chandra X-ray satellite observatory. More than two dozen astronomers have aligned their research goals to use Chandra to image a set of dying stars in the neighborhood of the Sun. The resulting X-ray images of these dying stars -- called planetary nebulae -- are shedding light on the violent "end game" of a Sun-like star's life. |
| Cambrian fossil pushes back evolution of complex brains Posted: 10 Oct 2012 10:14 AM PDT Complex brains evolved much earlier than previously thought, as evidenced by a 520-million-year-old fossilized arthropod with remarkably well-preserved brain structures. Representing the earliest specimen to show a brain, the fossil provides a "missing link" that sheds light on the evolutionary history of arthropods, the taxonomic group that comprises crustaceans, arachnids and insects. |
| Surprising spiral structure spotted by astronomers Posted: 10 Oct 2012 10:14 AM PDT Astronomers have discovered a surprising spiral structure in the gas around the red giant star R Sculptoris. This means that there is probably a previously unseen companion star orbiting the star. The astronomers were also surprised to find that far more material than expected had been ejected by the red giant. |
| Extending Einstein's theory beyond light speed Posted: 10 Oct 2012 06:27 AM PDT Applied mathematicians have extended Einstein's theory of special relativity to work beyond the speed of light. |
| Nobel Prize in Chemistry 2012: Smart receptors on cell surfaces Posted: 10 Oct 2012 05:19 AM PDT Your body is a fine-tuned system of interactions between billions of cells. Each cell has tiny receptors that enable it to sense its environment, so it can adapt to new situtations. Robert Lefkowitz and Brian Kobilka have been awarded the 2012 Nobel Prize in Chemistry for groundbreaking discoveries that reveal the inner workings of an important family of such receptors: G-protein-coupled receptors. |
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