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Science News for February 21, 2010


Marine reserves hit the spotlight in PNAS special issue, AAAS press briefing

A special issue of PNAS explores the latest science on marine reserves, revealing that well-designed reserves can benefit both fish and fishermen. Studies show that reserves can play a major role in reducing cumulative impacts on marine ecosystems in areas like the South China Sea and Coral Triangle.

SourceUniversity of California - Santa Barbara·JournalProceedings of the National Academy of Sciences·DateFeb 21, 2010

Call made for better metrics for energy savings

Michigan State University professor Bruce Dale says that while EROI (energy return on energy invested) is a useful method of measurement, it alone is not enough. He argues that we need to consider differences in energy quality and critical materials required for various energy alternatives, such as lithium for electric vehicles.

Better snowfall forecasting

The National Weather Service has adopted a new method for predicting snowfall density, allowing for more accurate forecasts and differentiation between powdery and wet snow. The method uses only two variables: temperature and wind speeds at mountain crest level.

SourceUniversity of Utah·JournalWeather and Forecasting·DateFeb 21, 2010

Babies and sleep: Another reason to love naps

Researchers found that daytime naps significantly aid infants' ability to generalize knowledge and recognize patterns in new information. The UA study revealed that napping within four hours after exposure to artificial language enhances abstract learning and sentence structure recognition in young children.

Quantum leap for phonon lasers

Researchers have made significant breakthroughs in developing practical phonon lasers, which could enable new medical imaging devices and precision measurement tools. Two separate teams, one in the US and the UK, have reported advancements in phonon laser development, using different approaches to overcome technical challenges.

SourceAmerican Physical Society·JournalPhysical Review Letters·DateFeb 21, 2010