Washington, Nov 20 : As NASA selects a landing site for its next Mars mission called the ‘Mars Science Laboratory’, four intriguing places on the Red Planet have made it to the final round.

The sites, alphabetically, are: Eberswalde, where an ancient river deposited a delta in a possible lake; Gale, with a mountain of stacked layers including clays and sulfates; Holden, a crater containing alluvial fans, flood deposits, possible lake beds and clay-rich deposits; and Mawrth, which shows exposed layers containing at least two types of clay.

Washington, Nov 20 : A new research by a team of scientists has suggested that climate change can open new avenues for spread of invasive plants.

The team’s findings indicate that certain plants could become invasive if they spread to places that were previously too cold for them.

“This paper is the first to suggest that the mechanisms that aid invasive species when they move from one continent to the next may actually work within continents when climate change gradually extends the distributional range of a species,” said Koen J. F. Verhoeven, an evolutionary biologist at The Netherlands Institute of Ecology.

“Plants may be able to outrun, so to speak, their enemies from the southern range,” he added.

Washington, Nov 20 : A detailed analysis of black carbon, in computer climate models, has suggested that those models may be overestimating global warming predictions.

Savanna fires occur almost every year in northern Australia, leaving behind black carbon, which is the residue of burned organic matter that remains in soil for thousands of years.

A new study, by researchers at Cornell University, quantified the amount of black carbon in Australian soils and found that there was far more than expected, according to Johannes Lehmann, a Cornell professor of biogeochemistry.

As a result of global warming, soils are expected to release more carbon dioxide, the major greenhouse gas, into the atmosphere, which, in turn, creates more warming.

Washington, Nov 20 : A new study has highlighted how the exploration of the ocean depths can benefit humankind in the field of biomedical research.

Many marine organisms such as sea anemones and corals produce fluorescent proteins, which come in a variety of dazzling hues.

Fluorescent proteins have revolutionized biomedical research by enabling the imaging of processes within living cells and tissues.

The impact of this technology is considered so high that the 2008 Nobel Prize in Chemistry was most recently awarded to scientists that discovered and further developed the first green fluorescent protein that was applied as cellular marker.

Dubai, 20th Nov.

London, Nov 19 : British iPhone users are facing a tough time using the new voice recognition software, because it does not understand British accents.

The new Google iPhone gives its users an opportunity to search for information using voice-recognition.

The high-tech programme was launched this week and allows users to search Google for cinema times, bring up pictures and information and convert

currency and measurements with one tap of the screen.