Anchor Lisa Mullins explains that a fireball in the Texas sky this weekend was not caused by debris from last week's space collision between two satellites. It was a meteor.

Reports have surfaced of an underwater collision involving two nuclear submarines in the Atlantic. Anchor Lisa Mullins get the details from BBC Defense Correspondent, Caroline Wyatt.

China's president Hu Jintao is wrapping up a four-nation visit to Africa. President Hu is signaling his country's interest in doing major business on the continent. But The World's Laura Lynch reports that some Africans have mixed feelings about the nature of the expanding Chinese investment.

Hillary Clinton arrived in Japan today to kick-off her first trip as Secretary of State. She'll also visit Indonesia, South Korea and China this week. The World's Katy Clark reports that the gloomy economy - which is hitting Japan and China especially hard - is threatening to overshadow all other matters on Secretary Clinton's agenda.

Today on The World: Hillary Clinton kicks off her first overseas trip as secretary of state; Also, Venezuelan voters do away with term limits for President Hugo Chavez; And Mexico's Green Party makes a surprising move, it calls for reinstating the death penalty.

WTP turns four, and we reluctantly delve into Valentine's Day. But first, H1-B visas and the Obama stimulus plan, and how the Internet is chaning Icelandic politics. We also hear about an Egyptian blogger who was recently jailed. Then, we hear about a guy who is using his blog to "speed-date" 37 languages. We also check into a Twitter translation service called Twitrans. And we have a user-generated piece of audio from Tajikistan. Cool.

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