ScienceDaily: Top Science News |
- Severe python damage to Florida's native Everglades animals documented in new study
- Scientists see 'sloshing' galaxy cluster
- Mouse to elephant? Just wait 24 million generations
- Ferroelectric switching discovered for first time in soft biological tissue
- Was the Little Ice Age triggered by massive volcanic eruptions?
- Chimp 'X factor': Extensive adaptive evolution specifically targeting the X chromosome of chimpanzees
- NASA study solves case of Earth's 'missing energy'
| Severe python damage to Florida's native Everglades animals documented in new study Posted: 30 Jan 2012 04:32 PM PST Precipitous declines in formerly common mammals in Everglades National Park in Florida have been linked to the presence of invasive Burmese pythons, according to new research. The study, the first to document the ecological impacts of this invasive species, strongly supports that animal communities in the 1.5-million-acre park have been markedly altered by the introduction of pythons within 11 years of their establishment as an invasive species. Mid-sized mammals are the most dramatically affected, but some Everglades pythons are as large as 16 feet long, and their prey have included animals as large as deer and alligators.  |
| Scientists see 'sloshing' galaxy cluster Posted: 30 Jan 2012 02:24 PM PST Scientists have recently discovered that vast clouds of hot gas are "sloshing" in Abell 2052, a galaxy cluster located about 480 million light years from Earth.  |
| Mouse to elephant? Just wait 24 million generations Posted: 30 Jan 2012 02:19 PM PST Scientists have for the first time measured how fast large-scale evolution can occur in mammals, showing it takes 24 million generations for a mouse-sized animal to evolve to the size of an elephant.  |
| Ferroelectric switching discovered for first time in soft biological tissue Posted: 30 Jan 2012 02:01 PM PST The walls of the aorta, the largest blood vessel carrying blood from the heart, exhibits a response to electric fields known to exist in inorganic and synthetic materials. The discovery could have implications for treating human heart disease.  |
| Was the Little Ice Age triggered by massive volcanic eruptions? Posted: 30 Jan 2012 10:15 AM PST Scientists suggest that the Little Ice Age was triggered by an unusual, 50-year episode of four massive volcanic eruptions. This led to an expansion of sea ice and a related weakening of Atlantic currents that caused the cool period to persist for centuries.  |
| Posted: 30 Jan 2012 10:08 AM PST Genetic mutations that boost an individual's adaptability have greater chances of getting through to X chromosomes -- at least in chimpanzees, according to new Danish research. An analysis of the genes of 12 chimpanzees has now demonstrated that the chimpanzee X chromosome plays a very special role in the animal's evolutionary development.  |
| NASA study solves case of Earth's 'missing energy' Posted: 27 Jan 2012 02:32 PM PST Two years ago, scientists released a study claiming that inconsistencies between satellite observations of Earth's heat and measurements of ocean heating amounted to evidence of "missing energy" in the planet's system. Where was it going? Or, they wondered, was something wrong with the way researchers tracked energy as it was absorbed from the sun and emitted back into space? An international team of atmospheric scientists and oceanographers set out to investigate the mystery.  |
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