Today in Moscow six astronauts were shut up in a capsule that will remain closed for 100 days. It's part of an experiment to find out how they might cope on the journey to and from the planet Mars. Anchor Lisa Mullins finds out more from New York Times reporter, Michael Schwirtz.

For today's Geo Quiz, we were looking for a place in the world where G20 identifies not an economic summit, but a zip code. The answer is Maryhill, part of the Scottish city of Glasgow.

Anchor Lisa Mullins speaks with filmmaker Kate Churchill and journalist Nick Rosen about their experience making the documentary, "Enlightened Up!" Churchill, a yoga devotee, followed Nick, a yoga skeptic, for six months as he explored the world of yoga here and in India.

Our daily geography puzzler.

The ex-Khmer Rouge official responsible for running the notorious S21 prison in Cambodia decades ago today admitted responsibility for torturing and killing thousands of inmates. He also apologized. The World's Mary Kay Magistad is covering the hearings at the UN-backed tribunal in Phnom Penh.

Anchor Lisa Mullins speaks with Alexander Wolfe, author of "Big Game, Small World," about the world of NCAA basketball and its growing reach into other countries for new talent. Four players in this year's Final Four teams are from Africa.

Benjamin Netanyahu returns to the post of Israeli prime minister today. Netanyahu's new coalition government includes the religious Shas party, which will hold the Housing ministry -- the office that oversees Jewish settlements. Linda Gradstein reports from Jerusalem.

The World's Jason Margolis looks at some of the OTHER nations attending the G20 summit this week. Though Europe and the US may grab the headlines, there are many other countries trying to accomplish their goals at the summit.

Anchor Lisa Mullins speaks with Simon Johnson, former chief economist for the International Monetary Fund, about the challenges facing President Obama as he joins leaders from the world's major economies at this year's G20 Summit.

Barack Obama makes his first trip to Europe today as president. Mr. Obama remains hugely popular in Europe, and many governments there welcome the change in tone his administration represents. But as The World's Gerry Hadden reports, that doesn't mean that European governments are willing to go along with his policy wishlist.