Washington

Arkansas state Democratic Party chairman shot dead

The chairman of the Arkansas state Democratic Party, Bill GwatneyWashington - The chairman of the Arkansas state Democratic Party, Bill Gwatney, 48, was shot dead Wednesday at the party headquarters in Little Rock, police said.

A gunman walked into the office, asked to speak to Gwatney and fired several shots, fatally wounding him. He died four hours later in hospital.

The shooter fled in a pickup truck, was chased by police and killed in an exchange of gunfire on a highway, the Arkansas Democrat- Gazette reported.

Russian integration into international system at risk, Bush says

Russian integration into international system at risk, Bush says Washington  - US President George W Bush said Wednesday that Russia has placed its integration into the international diplomatic and economic system at "risk" by its military campaign in Georgia.

Bush accused Russia of continuing military operations inside of Georgia despite a ceasefire agreed to on Tuesday, and called on Moscow to ensure humanitarian aid be allowed into the country.

Cassini begins transmitting data from Enceladus flyby

Cassini SpacecraftWashington, August 13: The Cassini spacecraft has began sending data to Earth following a close flyby of Saturn’s moon Enceladus.

During closest approach, Cassini successfully passed only 50 kilometers (30 miles) from the surface of the tiny moon.

Cassini’s signal was picked up by the Deep Space Network station in Canberra, Australia, and relayed to the Cassini mission control at NASA’s Jet Propulsion Laboratory in Pasadena, California.

Small hydroelectric dams are not so eco-friendly as previously believed

Washington, August 13: Environmental activists in Brazil have warned that the combined impacts of numerous small hydroelectric dams in one river basin can be at least as harmful as one large dam.

According to a report in ENN (Environmental News Network), the warning is a result of a flood of new projects along the rivers of the western Brazilian state of Mato Grosso.

“Hydraulic energy from small dams is interesting because of its low environmental costs, but everything has its limits,” said Andre Villas-Boas in reference to their proliferation along the tributaries of the XingA River, in the Amazon.

Global warming induced hurricanes may be fewer, but of higher intensity

Global WarmingWashington, Aug 13: Global warming will decrease hurricane activity, but if formed they would be of very high intensity, says a group of researchers.

In the study, scientists have developed a new method for evaluating the frequency of hurricane formation in present and future tropical climates.

In a study, Drs. David S. Nolan and Eric D. Rappin from the University of Miami's Rosenstiel School of Marine and Atmospheric Science have described the new method that may out do the computer models used for such studies.

Neanderthals didn’t mate with modern humans

Washington, August 13: A new DNA study has suggested that Neanderthals and anatomically modern humans did not interbreed.

According to a report in National Geographic News, researchers sequenced the complete mitochondrial genome—genetic information passed down from mothers—of a 38,000-year-old Neanderthal thighbone found in a cave in Croatia, to come up with their findings.

The new sequence contains 16,565 DNA bases, or “letters,” representing 13 genes, making it the longest stretch of Neanderthal DNA ever examined.

Mitochondrial DNA (mtDNA) is easier to isolate from ancient bones than conventional or “nuclear” DNA—which is contained in cell nuclei—because there are many mitochondria per cell.

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