NASA's Phoenix lander has touched down on the surface of Mars. Scientists around the world are watching. Anchor Lisa Mullins gets the latest from Ivan Semeniuk Ivan Semeniuk, US bureau chief for New Scientist magazine.

Phoenix Mission overview
Mars vertical image
Pictures from the surface
Multimedia gallery

The World's Clark Boyd reports that Britain's Ministry of Defense has released files related to sightings of "Unidentified Flying Objects" over the past 30 years.

Sketch of a UFO made by a British police officer

The World's Clark Boyd reports that a British company has devised a way to advance online "targeted advertising." The company says it's anonymous, but privacy advocates are skeptical.

The World's Clark Boyd reports on "Silverback," a cell phone-based video game designed to raise awareness about the threats facing mountain gorillas in Congo, Rwanda and Uganda.

The World's Clark Boyd reports on a campaign to raise awareness about Kareem Amer, an Egyptian blogger who is currently in jail.

The World's Quil Lawrence reports on Islamic scholars in the Iranian city of Qom who are taking full advantage of the latest technology to pursue their studies.

The World's Gerry Hadden reports on a new musical instrument invented in Spain. It's called the Reactable, and it's sort of a blend between a synthesizer and a turntable.

Darfur activists groups say their IT infrastructures - emails and websites - have recently come under attack. The World's Clark Boyd reports that it appears the attacks are coming from China.

Saudi Arabia bans political parties and limits free expression. But young Saudis are pushing the limits of those restrictions... by blogging. Kate Seelye has the story.

The BBC's Chris Vallance reports that intelligence officials are worried that real-life terrorists could use virtual reality games, such as "World of Warcraft," as a training ground.