Here's the line-up for Tech Podcast 175: first, a website that allows you to donate grains of rice while taking a vocabulary quiz. Then, two reports on Skype. The first looks at how language teachers, and learners, are connecting via voice-over-internet. The second looks at why Germany wants to crack Skype's encryption, but can't. Then, we stay in Germany to hear about how paying by fingerprint is catching on. And we finish with an extended interview with Noah Shachtman about his recent article on how social networking is replacing electronic networking in Iraq.

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Beirut correspondent Ben Gilbert checks in on a band we profiled back in 2003. The Iraqi band is called "Unknown to No One," or UTN-1. It gained worldwide attention just after Saddam Hussein was overthrown. The band had since split up. Now they're back together and giving it another shot in Beirut.

We're looking for an airport for our Geo Quiz today. You know, a crowded airport, where customs officials are rude, and the terminals seem a mile apart. Truth is... there are lots of airports that fit that description. So, whichever one you name, that's the answer. Name your candidate at 'the-world-dot-org.' Meanwhile, anchor Marco Werman speaks to Martin Hickman, consumer affairs reporter for London's Independent newspaper, to find out which airports have the worst reputations.

For The World's daily Geo Quiz -- help us find the world's worst airport.

Elections are being held for Hong Kong's Legislative Council on Sunday. The World's Mary Kay Magistad reports on what some are calling a referendum on Hong Kong's political future.

Imagine a theory that could explain all of the workings of the universe. One man's come up with one. He's a surfer who also happens to be a physicist. And his "theory of everything" is being taken seriously by some in the field. Anchor Marco Werman speaks about the new theory with Marcus du Sautoy, a professor of mathematics at Oxford University.

The World's Jason Margolis previews a key climate change conference that starts next week in Bali, Indonesia. The goal of the conference is to start hammering out a new climate change treaty that would replace the UN's Kyoto Protocol when it expires in 2012.

Jean-Dominique Bauby was a high-powered French editor until, at age 43, he experienced a massive stroke that left him completely paralyzed except for the use of his left eye. With his left eye, he managed to blink out dictation for a memoir, The Diving Bell and the Butterfly. Now, as Beth Accomando reports, Bauby's story has made it to the big screen.

Anchor Marco Werman speaks with Pakistani journalist and filmmaker Hasan Zaidi about the opening in Pakistan of the movie "Goal." It's an Indian film -- and Pakistan has a ban on movies made in India.

The World's Aaron Schachter reports that European nations are pressing ahead with plans for a European Defense Force. This at a time of growing tensions with Russia.