US and Iraqi security forces say they've detained a key aide to Shiite cleric Moqtada al-Sadr. Prime Minister Nouri al-Maliki owes his rise to power largely to Sadr's support. Anchor Ken Bader gets reaction from Haider Abadi, a member of Iraq's parliament and a leader of Prime Minister Maliki's Islamic Dawa Party.

Everybody's favorite topic: The weather. It's warm in Moscow. There's no snow in the Alps; no problem. The Philippines worst environmental disaster: How to clean up an oil spill? Ancient air conditioning in Dubai. And our main man in Prague is using the sun to power his cellphone.

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Argentine musician Bernardo Monk joins anchor Marco Werman in our studio. The saxophonist calls his music a union of tango and jazz.

Today's answer is Italy's premier ski resort of Cortina D'Ampezzo, where owners are using helicopters to fly in snow because of the warm winter.

Where in the world will we go today?

Marco Werman speaks with Harry Harding of the Eurasia Group. The New York-based consultancy firm has issued a list of the top ten world leaders to watch in 2007. The list is topped by China's president Hu Jintao, and it includes several leaders who are not friendly toward the United States.

The World's Rob Hugh-Jones reports that the relationship between President Bush and Britain's Tony Blair may be cooling. Mr. Blair has been a steadfast ally for Mr. Bush, especially with regard to Iraq. But Britain is now planning a withdrawal from Iraq, and Mr. Blair is planning to leave office later this year.

Important battlefields across Ireland, many of which saw Irish rebels taking on English forces, are to be protected from encroaching housing and road developments. Anchor Marco Werman speaks with Dick Roche, Ireland's Minister for Environment, Heritage and Local Government.

Correspondent Ethan Lindsey reports on the controversy in Germany over the opening of a Church of Scientology Center in the capital, Berlin. The country has long refused to recognize Scientology as a religion.