ScienceDaily: Top Science News |
- Two volcanoes erupting in Alaska: Scientists are monitoring and providing alerts on Pavlof and Cleveland volcanoes
- Cosmic swirly straws: Galaxies fed by funnels of fuel
- Active or 'extremely active' Atlantic hurricane season predicted for 2013
- Facial-recognition technology proves its mettle
- Monkey teeth help reveal Neanderthal weaning
- Detection of the cosmic gamma ray horizon: Measures all the light in the universe since the Big Bang
- Why early human ancestors took to two feet
- Advanced biological computer developed
| Posted: 24 May 2013 03:02 PM PDT Two of Alaska's most active volcanoes -- Pavlof and Cleveland -- are currently erupting. At the time of this post, their activity continues at low levels, but energetic explosions could occur without warning. Located close to the western end of the Alaska Peninsula, Pavlof is one of the most active volcanoes in the Aleutian arc, having erupted more than 40 times since the late 1700's.  |
| Cosmic swirly straws: Galaxies fed by funnels of fuel Posted: 24 May 2013 12:48 PM PDT Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws. The results show that cold gas -- fuel for stars -- spirals into the cores of galaxies along filaments, rapidly making its way to their "guts." Once there, the gas is converted into new stars, and the galaxies bulk up in mass.  |
| Active or 'extremely active' Atlantic hurricane season predicted for 2013 Posted: 24 May 2013 11:49 AM PDT In its 2013 Atlantic hurricane season outlook issued today, NOAA's Climate Prediction Center is forecasting an active or extremely active season this year.  |
| Facial-recognition technology proves its mettle Posted: 24 May 2013 11:25 AM PDT In a study that evaluated some of the latest in automatic facial recognition technology, researchers were able to quickly identify one of the Boston Marathon bombing suspects from law enforcement video, an experiment that demonstrated the value of such technology.  |
| Monkey teeth help reveal Neanderthal weaning Posted: 24 May 2013 07:48 AM PDT Most modern human mothers wean their babies much earlier than our closest primate relatives. But what about our extinct relatives, the Neanderthals? A team of U.S. and Australian researchers reports that they can now use fossil teeth to calculate when a Neanderthal baby was weaned. The new technique is based in part on knowledge gained from studies of teeth from human infants and from monkeys.  |
| Detection of the cosmic gamma ray horizon: Measures all the light in the universe since the Big Bang Posted: 24 May 2013 07:46 AM PDT Radiation from all galaxies that ever existed suffuses the universe with a diffuse extragalactic background light (EBL). Measuring the EBL is as fundamental to cosmology as measuring heat from the Big Bang (cosmic microwave background) at radio wavelengths. Researchers describe the best measurement yet of the evolution of the EBL over the past 5 billion years, based on observations from radio waves to gamma rays from NASA spacecraft and ground-based telescopes.  |
| Why early human ancestors took to two feet Posted: 24 May 2013 07:40 AM PDT A new study by archaeologists challenges evolutionary theories behind the development of our earliest ancestors from tree dwelling quadrupeds to upright bipeds capable of walking and scrambling.  |
| Advanced biological computer developed Posted: 23 May 2013 03:03 PM PDT Using only biomolecules, scientists have developed and constructed an advanced biological transducer, a computing machine capable of manipulating genetic codes, and using the output as new input for subsequent computations.  |
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