Everything You Need to Know About Health: ScienceDaily Top Science Headlines -- for Saturday, June 28, 2008

ScienceDaily Top Science Headlines

for Saturday, June 28, 2008

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Unique Pheromone Detection System Uncovered (June 27, 2008) -- Researchers have overturned the current theory of how a pheromone works at the molecular level to trigger behavior in fruit flies. The finding, if it proves true in other species, might lead to new ways to manipulate the actions of harmful insects. ... > full story

Scientists Discover How An Injured Embryo Can Regenerate Itself (June 27, 2008) -- Scientists have developed a mathematical model to describe interactions that occur within genetic networks of an embryo, answering the age-old question of how half embryos are able to maintain their tissues and organs in the correct proportions despite being smaller than a normal sized embryo. Understanding the processes that govern embryonic cell development, may lead, in the future, to scientists being able to repair injured tissues. ... > full story

Pumice As A Time Witness (June 27, 2008) -- Chemical fingerprints of volcanic eruptions and numerous pumice lump finds from archaeological excavations illustrate relations between individual advanced civilizations in the Eastern Mediterranean. Thanks to new tests and to the provenancing of the respective pumice samples to partially far-reaching volcanic eruptions, it became possible to redefine a piece of cultural history from the second millenium B.C. ... > full story

Hard Work While Fatigued Affects Blood Pressure (June 27, 2008) -- When fatigued individuals perceive a task as being achievable and worth doing, they increase their effort to make up for their diminished capability due to fatigue. As a result, blood pressure tends to rise and remain elevated until the task is completed or individuals stop trying because they think success is impossible or too difficult to be justified. ... > full story

Asteroid-hunting Satellite A World First (June 27, 2008) -- Canada is building the world's first space telescope designed to detect and track asteroids as well as satellites. Called NEOSSat, this spacecraft will provide a significant improvement in surveillance of asteroids that pose a collision hazard with Earth and innovative technologies for tracking satellites in orbit high above our planet. ... > full story

Too Many Choices Can Spoil The Research (June 27, 2008) -- The more choices people get, the less consistent they are in making those choices, according to a new study. The study's findings may affect the way researchers examine consumer choices. ... > full story

Super-sensitive Explosives Detector Demonstrated (June 27, 2008) -- Using a laser and a device that converts reflected light into sound, researchers at the US Department of Energy's Oak Ridge National Laboratory can detect explosives at distances exceeding 20 yards. ... > full story

Higher Coffee Consumption Associated With Lower Liver Cancer Risk (June 27, 2008) -- A new large, prospective population-based study confirms an inverse relationship between coffee consumption and liver cancer risk. The study also found that higher levels of gamma-glutamyltransferase in the blood were associated with an increased risk of developing the disease. ... > full story

A Look Into The Nanoscale (June 27, 2008) -- Researchers have captured time-series snapshots of a solid as it evolves on the ultra-fast timescale. Using femtosecond X-ray free electron laser (FEL) pulses, the team is able to observe condensed phase dynamics such as crack formation, phase separation, rapid fluctuations in the liquid state or in biologically relevant environments. ... > full story

Promising Cancer Drug Target In Prostate Tumors Identified (June 27, 2008) -- Scientists report they have blocked the development of prostate tumors in cancer-prone mice by knocking out a molecular unit they describe as a "powerhouse" that drives runaway cell growth. The researchers say the growth-stimulating molecule called p110beta -- part of a cellular signaling network disrupted in several common cancers -- is a promising target for novel cancer therapies designed to shut it down. ... > full story

Capturing DNA Molecules In A Nanochannel (June 27, 2008) -- An electric voltage can be used to propel DNA molecules through a channel a few nanometers deep, or to stop them in their tracks. In a strong electric field the molecules judder along the channel, while in weaker fields they move more smoothly. This enables DNA fragments to be 'captured' on a chip and separated for analysis. ... > full story

How Effective Are Underage Drinking Prevention Programs? (June 27, 2008) -- Underage drinking is a national concern that led the US surgeon general to issue a "Call to Action to Prevent and Reduce Underage Drinking" last year. Now, a new report assesses the effectiveness of underage drinking prevention programs and provides a better idea of how to achieve key goals outlined by the surgeon general. ... > full story

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