Washington, April 2 : Researchers at Scripps Institution of Oceanography at UC (University of California) San Diego have uncovered key clues about bioluminescent worms in the sea that produce a green glow and the biological mechanisms behind their light production.

Research conducted by Scripps marine biologists Dimitri Deheyn and Michael Latz reveals that marine fireworms use bioluminescence to attract suitors in an undersea mating ritual.

Washington, April 2: Barack Obama’s choice of gift to the Queen on his first meeting with the monarch has managed to draw frowns from critics.

The U. S. President, who arrived in London to attend the G20 summit, had presented the royal with a personalised iPod during the historic meeting at Buckingham Palace.

The 82-year-old Queen, an iPod fan, who already holds a 6GB silver model, was presented the gadget containing photos and a video of her last visit to America in 2007.

Boston (United States), Apr. 2: A US immigration judge has given President Barack Obama's Kenyan aunt ten more months to prepare an argument against her deportation.

The decision came six years after Aunt Zeituni Onyango was first ordered to leave the United States.

"Praise God," said Zeituni Onyango as she stepped out of a closed hearing yesterday morning using a cane and wearing a rust-colored wig.

Washington, April 2 : An omega-3 fatty acid found in fish oils has shown some promise to reduce the size of tumours and enhance the positive effects of the chemotherapy drug cisplatin, while limiting its harmful side effects.

A. M. El-Mowafy, a professor at Mansoura University in Egypt, studied the effects of the fatty acid Docosahexanoic acid (DHA) on solid tumours growing in mice.

The researcher also studied how this fatty acid interacts with the drug cisplatin, which is known to cause kidney damage.

Washington, April 2 : The eyespots of some butterflies serve to both attract mates and ward off predators, according to new research by Yale University biologists.

The researchers say that butterflies seem able to both attract mates and ward off predators by using different sides of their wings.

Miami  - Novak Djokovic turned the corner in his career matchups with Jo-Wilfried Tsonga, winning 6-3, 6-4 on Wednesday to reverse a run of four straight losses to the Frenchman and book a semi-final place at the Miami Masters.

The 2007 champion also began turning around his reputation as a shirker, fighting through what he said was a stomach problem as he stayed on court to see out the victory.