A range of wonderful stories this week. Let there be light in the hills of Mexico! Don't litter in England; Big Brother is watching. A radio station in a psychiatric ward in Argentina. Can they build an underwater tunnel from Africa to Europe? What about through the Alps? Like text messaging in Cambodia? Not so fast. And genetically modified crops that can make human insulin.

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A new report from the Intergovernmental Panel on Climate Change looks at the impacts of global warming. This podcast explores how climate change is affecting our world: from Africa, to South America, to Europe. And what global warming could mean in your neck of the woods.

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The Irish people have an affinity for the Easter season above and beyond the religious. It was on Easter, 1916, that they rebelled against the British, and they've been singing about the Irish rebellion ever since. Correspondent Av Harris of station WNPR in Hartford, Connecticut, caught up with an Irish folk group that has been singing about "The Troubles" for decades.

In today's Geo Quiz we were looking for a gulf bounded by the northern coast of Latvia and the western coast of Estonia. The answer is the Gulf of Riga.

Anchor Marco Werman speaks with Delphine Minoui, Tehran correspondent for the French newspaper "Le Figaro," about an aspect of the British hostage crisis that has some people perplexed - suits but no ties.

We're looking for a gulf in the Baltic Sea.

Venezuela's President Hugo Chavez's largesse at home and throughout Latin America is well known. Now with Venezuela a leading lender in the region, institutions like the International Monetary Fund could be heading for trouble. The World's Ruxandra Guidi has more on the story.

Anchor Marco Werman speaks with The World's Mary Kay Magistad in Beijing about China's reaction to the criticism of its role in Sudan.

China has major financial interests in Sudan. A group of activists is hoping to pressure China into using its influence there to stop the violence in Darfur. They've launched a campaign to shame China by labellling the 2008 Beijing Games "the Genocide Olympics." The World's Jeb Sharp reports.

A gruesome report out today from the UN High Commissioner for Human Rights charges that Sudanese soldiers raped women and teenage girls in Darfur last December. The report calls for an immediate investigation into the charges by the Sudanese government. Anchor Marco Werman gets more on the story from the BBC's Imogene Foulkes in Switzerland.

Correspondent Will Everett profiles Samuel Benedict Goldberg, a veteran of World War I, which the United States entered 90 years ago today. Mr. Goldberg tells of his service in the 12th Army Cavalry. Four months after this interview, he passed away at the age of 106.