President Bush welcomed Nigeria's new president to the White House, even though the State Department described May's election in the West African country as 'seriously flawed'. What's not flawed is Nigeria's position as an important supplier of crude oil to the US.

Growing up in the slums of Kenya seems an unlikely jumping off point for an African orphan to graduate from a British university. But that's just what Kenyan Sammy Gitau did. Anchor Lisa Mullins talks to him about his extraordinary story.

Anchor Lisa Mullins speaks with Daniel Franklin of The Economist. He predicts China's booming economy could come crashing down next year.

The World's Mary Kay Magistad reports from Beijing that the number of billionaires rose from 16 to 106 during the 12 months.

Louis Palmer is a Swiss schoolteacher and he's on a mission. He's driving his solar-powered car around the world. His latest stop is in Bali for the UN Climate Change conference. That's where reporter Trish Anderton caught up with him.

Anchor Lisa Mullins speaks with the BBC's Roger Harrabin, who's in Bali for the UN Climate Change conference. Negotiations at the meeting continue but little progress is reported. Critics say the United States is a major obstacle at the talks. US delegates have refused to commit to specific targets for reducing greenhouse gas emissions.

Entire program - December 13

The World's Marco Werman offers his picks for best global music released during 2007. There are lots of new albums to talk about. But many of Marco's favorites are old tunes rediscovered and digitized for the 21st century.

The answer to today's geo quiz is Ecuador.

Where in the world will we go today?