The World's Alex Gallafent reports on the slow fade into oblivion for the airline paper ticket. For many international travelers, it's already part of the past.

The World's daily geography quiz.

Sudanese officials declined to give a reason for expelling the director of the US humanitarian organization, CARE, from Sudan. The director, Paul Barker, says he thinks he was asked to leave because of an e-mail he sent to CARE employees describing the situation in Darfur. Anchor Lisa Mullins speaks with the president of CARE, Helene Gayle, who says she hopes the Sudanese government will relent and allow Barker to remain in the country.

The Pentagon wants to keep drowsy soldiers alert when they're short on sleep. So it's underwriting sleep research to find ways to zap sleep-deprived soldiers back to attention. The World's Jason Margolis has our story.

Correspondent Jocelyn Ford reports from Beijing about one of China's most famous bloggers.

Internet giant Yahoo is being sued in US federal court accused of turning information about bloggers over to the Chinese government. The World's technology correspondent, Clark Boyd, has the story.

"A national catastrophe without precedent" is how the Greek government is describing the fires that are sweeping through the southern and western parts of Greece. Greek officials think some of the fires were set intentionally. Anchor Lisa Mullins gets the latest on the story from Matt Gutman in Greece.

Anchor Lisa Mullins speaks with the BBC's Rupert Wingfield-Hayes in Moscow about today's arrest of ten suspects in the murder of Russian investigative journalist Anna Politkovskaya last October. Politkovskaya was a vocal critic of Russian president Vladimir Putin.

The World's Matthew Bell reports on today's announcement by Attorney General Alberto Gonzales that he will step down in September. The announcement made news worldwide today.