Washington, April 20 : A new study has determined that a widely discussed "atmospheric engineering" scheme intended to combat global warming could have unanticipated consequences in reducing the effectiveness of certain kinds of solar power around the Earth.

In the study, the National Oceanographic and Atmospheric Administration's Daniel M. Murphy examines a proposal to minimize climate change by enhancing the stratospheric aerosol layer, which reduces sunlight to Earth by scattering it to outer space.

London, April 20 : Marc Ona Essangui, a campaigner who was jailed during his battle to save the rainforest in Gabon, Africa, has received a top international award, known as the `Green Nobel'.

According to a report by BBC News, Ona was honoured for his fight to stop what he describes as a destructive mining project in the Ivindo National Park.

He is one of seven people from six continental regions to be awarded an equal share of the 900,000 dollars (600,000 pounds) 2009 Goldman Environmental Prize.

Washington, Apr 20 : Michigan scientists have unravelled the mystery behind the much hyped healing power of the main ingredient in turmeric, a spice revered in India as `holy powder.'

Turmeric has been used for centuries in folk medicine to treat wounds, infections, and other health problems.

While many scientists have conducted research on its main ingredient-curcumin-no details had been revealed as to how it functions in the body, until now.

Washington, April 20 : In a new research, scientists have suggested that lead generated by human activities causes clouds to form at warmer temperatures and with less water, which could alter the pattern of both rain and snow in a warmer world.

The research has been done by an international team of scientists, which included researchers from institutions in the United States, Switzerland and Germany.

Washington, Apr 20 : Scientists from University of California, San Diego and the Moores UCSD Cancer Centre have identified a biomaker that may help predict aggressiveness of difficult-to-treat form of leukaemia.

The research team, led by Dr Paul A. Insel, professor of pharmacology and medicine at the UC San Diego School of Medicine, has found that high levels of a enzyme, called PDE7B, in the blood are an indicator that chronic lymphocytic leukemia (CLL) - the most common form of adult leukaemia.

London, April 20 : Zahi Hawass, Egypt's top archaeologist, has claimed that the tombs of legendary Queen Cleopatra and her Roman lover Antony have been found.

According to a report in the Telegraph, Hawass has claimed that the tombs of the two lovers are located at the Toposiris Magna temple in Egypt, where significant findings have been made.