The video-sharing platform YouTube has made its first live debut on Saturday night, featuring singers, dancers and video bloggers who became online celebrities thanks to the popular website.

Scientists have identified a new strain of the deadly Ebola virus responsible for the deaths of 37 people in November 2007. More than one in three patients infected by the virus were killed.

A virus has infected the computer network of the Pentagon, the heart of the US military. Officials claimed they had taken the necessary steps to counter the virus, but declined to give any information on whether the network was harmed.

If Eric Holden is appointed at the head of the American justice, he will have to deal with candidate Barack Obama’s promise to close the Guantanamo prison. The web reacts.

Through the DNA analysis of two hairs and a tooth, scientists have confirmed that remains found in Poland in 2005 are those of famous 15th-century astronomer Nicolas Copernicus. The revelation marks the end of a 200-year hunt.

Hundreds of kilometres above the Earth, the International Space Station - the most expensive and ambitious co-operative space program in history - has rocketed to its 10th birthday.

Seeking to control "social, political, economic and moral damage," Iran has blocked access to over five million Web sites, including social networking sites such as Facebook and the popular video-sharing portal, YouTube.

NASA tested for the first time a new deep space communications system with a standardised protocol, which will allow a kind of interplanetary Internet. Current methods to communicate between Mars crafts and Earth are laborious.

Forty-two year old Debby, the world's oldest polar bear, died Monday in a Canadian zoo in Winnipeg, Manitoba. The world's largest land predator, the polar bear is a threatened species.

Two members of the Endeavour shuttle crew began a 6.5-hour spacewalk on Tuesday to carry out maintenance and extension works on the International Space Station.

Shu Quan-Sheng, a Chinese-born naturalized US citizen and physicist who headed a high-tech company, is facing a 10-year prison sentence for having sent secret information about the US space program to China from 2003 to 2007.

As the world leader in smartphones, with 31.1% of market share, RIM has just launched the Blackberry Storm, hoping to capitalise on the excitement over touch-screen phones and give the Apple iPhone a run for its money.

Thirty years ago, 913 members of the People's Temple led by Reverend Jim Jones died in a suicide massacre in Guyana. The Web remembers and pays tribute to the victims.

The Large Hadron Collider (LHC) will only be restarted next summer according to European science operators CERN. This huge atom-smasher had to be switched off last September and was expected to start again next spring.

A scientist who developed a cervical cancer vaccine has revealed a major breakthrough in the research against skin cancer. Professor Ian Frazer of the University of Queensland will start human tests in 2009 following successful tests on animals.

A space probe has successfully landed on the lunar surface after ejecting from an unmanned craft orbiting the moon, marking another success for India's first lunar mission, the Indian Space Research Organisation announced.

The web gets organised as leaders from the world's largest economies gather in Washington for the G20 summit.

Microsoft plans to make Windows Live services more social and build bridges with popular websites like twitter or Flickr. It will become similar to social-networking website Facebook, which has partnership with Microsoft.

A camera aboard the US space telescope has succeeded in taking the first-ever photos of an exoplanet located in the constellation Piscus austrinus, some 25 light years from the terrestrial solar system.