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Wednesday, July 24, 2013

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News


Wave of blue fluorescence reveals pathway of death in worms

Posted: 23 Jul 2013 03:12 PM PDT

The final biological events in the life of a worm are described in a new article. The paper reveals how death spreads like a wave from cell to cell until the whole organism is deceased.

Purple bacteria on Earth could survive alien light

Posted: 23 Jul 2013 10:45 AM PDT

Purple bacteria contain pigments that allow them to use sunlight as their source of energy, hence their color. Physicists recently found that these organisms can also survive in the presence of extreme alien light. The findings show that the way in which light is received by the bacteria can dictate the difference between life and death.

Harvesting electricity from the greenhouse gas carbon dioxide

Posted: 23 Jul 2013 10:44 AM PDT

A new method for producing electricity from carbon dioxide could be the start of a classic trash-to-treasure story for the troublesome greenhouse gas, scientists are reporting. The method uses CO2 from electric power plant and other smokestacks as the raw material for making electricity.

Rare bushcricket's chirp as loud as a power saw

Posted: 23 Jul 2013 10:43 AM PDT

A recently rediscovered species of bushcricket uses elastic energy and wing movement to reach high ultrasonic frequencies involving sound levels of about 110dB – comparable to that of a power saw.

Scientific who's who of Bolivian mammals

Posted: 23 Jul 2013 10:42 AM PDT

Biologists have published a massive database of mammals occurring in Bolivia, shedding light on the poorly known yet vast wildlife diversity of this South American country.

Why are sea stars dying from New Jersey to Maine? Divers asked to report large groupings of starfish

Posted: 23 Jul 2013 10:42 AM PDT

Marine biologists are working to identify the cause of a disease that is killing sea stars (starfish) from New Jersey to Maine.

Oldest European fort in the inland U.S. discovered in Appalachians

Posted: 23 Jul 2013 08:37 AM PDT

The remains of the earliest European fort in the interior of what is now the United States have been discovered by a team of archaeologists, providing new insight into the start of the U.S. colonial era and the all-too-human reasons spoiling Spanish dreams of gold and glory.

Controlling genes with light: New technique can rapidly turn genes on and off, helping scientists better understand their function

Posted: 23 Jul 2013 08:37 AM PDT

New technology can rapidly start or halt the expression of any gene of interest simply by shining light on the cells.

Secrets of mussels' clinginess revealed

Posted: 23 Jul 2013 08:36 AM PDT

Understanding the strength of the shellfish's underwater attachments could enable better glues and biomedical interfaces.

Tropical ecosystems regulate variations in Earth's carbon dioxide levels

Posted: 23 Jul 2013 07:35 AM PDT

Rising temperatures, influenced by natural events such as El NiƱo, have a corresponding increase in the release of carbon dioxide from tropical forest ecosystems, according to a new study.

Is a common food fungus worsening the AIDS epidemic?

Posted: 23 Jul 2013 06:52 AM PDT

A type of fungus coating much of the stored corn, wheat, rice and nuts in developing countries may be quietly worsening the AIDS epidemic, according to a new article.

Environmental toxins enter the brain tissue of polar bears

Posted: 23 Jul 2013 05:13 AM PDT

Scientists from Denmark and Canada are worried by their new findings showing that several bioaccumulative perfluoroalkyl substancesare crossing the blood brain barrier of polar bears from Scoresby Sound, East Greenland. Meanwhile, the same group of scientists is beginning to see a decrease in concentrations of this group of contaminants in polar bears from the same region.

Devastating long-distance impact of earthquakes

Posted: 23 Jul 2013 04:39 AM PDT

In 2006 the island of Java, Indonesia was struck by a devastating earthquake followed by the onset of a mud eruption to the east, flooding villages over several square kilometers and that continues to erupt today. Until now, researchers believed the earthquake was too far from the mud volcano to trigger the eruption. Geophysicists have now use computer-based simulations to show that such triggering is possible over long distances.

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