Anchor Aaron Schachter discusses today's terrorism warning with Richard Clarke, former anti-terrorism adviser to President Bush.

A report by US intelligence agencies warns that Al Qaeda has regrouped and is determined to carry out new attacks in the United States. An unclassified portion of the National Intelligence Estimate was released today. The World's Katy Clark has more.

Reporter Will Everett profiles an American musician who moved to Istanbul to indulge his passion for a Turkish instrument called the saz.

Today's answer is the Ctesiphoin Arch in Iraq. It's all that remains of a major city in ancient Mesopotamia. Today, it's an archeological site that the US military wants to protect. The World's David Leveille explains.

Anchor Aaron Schachter speaks with British endurance swimmer Lewis Gordon Pugh. Yesterday Pugh became the first person to swim at the geographic North Pole. He braved arctic temperatures for nearly 19 minutes as part of a campaign to raise awareness about climate change.

Our daily geography puzzler.

Today we begin a series looking at the coming of age of China's one-child policy. China now has more "only children" than anywhere else in the world. These only children have grown up in an unprecedented time of economic growth for China. Today, The World's Mary Kay Magistad profiles one member of the one-child generation, a young photographer, blogger and English student named LooLoo.

Ruxandra Guidi reports on a beauty pageant scandal in Bolivia. The "Miss Cholita" pageant in La Paz focuses on indigenous traditions, with contestants wearing traditional dresses and sporting long braids. A winner chosen last week was stripped of her title because her braids were made from hair extensions. A new contest was held over the weekend to crown a new winner.

The World's Franc Contreras reports that Venezuela's leading opposition TV station is back today. R-C-T-V was denied a broadcast license by the government of President Hugo Chavez. But the station is now available through cable and satellite TV providers.