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.

Ice melt speeds mountain temperature rise

Melting GlacierWashington, August 13: A new research by scientists, through analysis of topography, ice, and free atmospheric change, has found that the melting of ice on mountains speed up their temperature rise.

The research was conducted by N. C. Pepin from the University of Portsmouth, U. K., and

J. D. Lundquist from University of Washington, US.

Forecasting how mountains will respond to climate change requires not only model estimations of large-scale regional warming trends, but also estimates of if and how warming rates vary with elevation.

‘Crucial breakthrough’ may better understanding of dementia’s onset

Washington, August 13: University of Nottingham scientists have for the first time artificially reproduced a common form of dementia, a "crucial breakthrough" that may help advance the understanding of the disease.

The researchers say that their work has provided them with the first ever opportunity to map the onset of the disease, similar to Alzheimer's, and track how drugs affect it.

They hope that their research will enable them to develop treatments to halt the onset of the disease.

Writing about their study, the researchers revealed that described dementia with Lewy bodies as the second most ost common form of dementia.

Why a thrilling movie is just as hair-raising as an exciting book

Washington, Aug 13 (ANI): Watching an action star walk along the ledge of a skyscraper makes us skip a heartbeat, as if we were risking our own life. Also, while reading a book that describes the same scene can give goosebumps. Now, a team of researchers has come up with an answer to explain why exactly this happens.

At the NeuroImaging Center of the University Medical Center Groningen of the University of Groningen (the Netherlands), Mbemba Jabbi, Jojanneke Bastiaansen and Christian Keysers compared what happens in our brains when we view the facial expressions of other people with the brain activity as we read about emotional experiences.

Contracts for work in Iraq exceed 85 billion dollars

Contracts for work in Iraq exceed 85 billion dollars Washington  - The US government has spent 85 billion dollars paying contractors for work in Iraq since the war began more than five years ago, according to a report released Tuesday by the Congressional Budget Office.

The amount spent, which does not include figures for 2008, accounts for 20 per cent of all spending - including military operations - by the US government in Iraq since the March 2003 invasion, CBO said.