Washington  - A fire ravaged a house in Memphis, Tennessee Saturday, killing seven people - including five children - local media reported.

Three children - boys aged 11 and 16, and a 17-year-old girl, suffered second-degree burns to their faces and hands, the Memphis Commercial Appeal reported.

Firefighters said those who were charred to death included a 38- year-old woman, an 18-year-old male, three girls aged 9, 7 and 4, and two boys aged 5 and 1.

Washington  - US President George W Bush sought to reassure Georgia of Washington's steady support Saturday, while demanding that "Russia must act to end this crisis."

In his weekly radio address, Bush said it was vital that the US and other free nations would "ensure that an embattled democracy seeking to stand with us remains sovereign, secure, and undivided."

Washington, Aug 16: Boys may be more apt to have childhood asthma than girls, but they''re also more likely to grow out of it in the adolescence, say a new study.

Washington, August 15: Using a novel theoretical approach, researchers from NASA and other institutions have identified the common thread that determines how aerosols from human activity, like the particles from burning of vegetation and forests, influence cloud cover and ultimately affect climate.

The study improves researchers’ ability to predict whether aerosols will increase or decrease cloud cover.

“We connected the dots to draw a critical conclusion, and found evidence over the Amazon that traces the direct path of the effect of human activity on climate change by way of human-caused aerosols,” said study co-author Lorraine Remer, a physical scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

Washington, August 15: NASA’s Cassini spacecraft has pinpointed precisely where the icy jets erupt from the surface of Saturn’s geologically active moon Enceladus, which can be called a feat of interplanetary sharpshooting.

New carefully targeted pictures reveal exquisite details in the prominent south polar “tiger stripe” fractures from which the jets emanate.

The images show the fractures are about 300 meters (980 feet) deep, with V-shaped inner walls. The outer flanks of some of the fractures show extensive deposits of fine material.

Finely fractured terrain littered with blocks of ice tens of meters in size and larger (the size of small houses) surround the fractures.

Washington, Aug 15: Most teenagers underestimate risks associated with trauma-related injuries, particularly the ones due to motor vehicle crashes, because they focus more on fate rather than choice, according to a new research.

The study uncovered major flaws in teens' understanding of factors that can lead to trauma-related injuries.