Journalist Roxana Saberi on how music helped her pass the time in an Iranian prison where she was incarcerated in 2009.
Last weekend's tragedy in Katyn seems doubly cursed and underscored its meaning in history and Polish-Russian relations.
Geoengineering could help with climate change, but the possibility of massive climate interventions raises big concerns.
President Obama wants to change the tax rate for American multinationals, who he says don't pay their fair share for overseas profits.
Nuclear treaty serves diplomatic and domestic goals for US and Russia, but changes little in strategic relationship.
Unrest in the Central Asian nation of Kyrgyzstan may endanger a US military base key to operations in Afghanistan.
Global efforts to eradicate Guinea worm disease close to success, but cases still exist in Southern Sudan.
The violence in the streets of Bangkok over the weekend was the worst in nearly 20 years, as anti-government protesters clashed with security forces.
Since Mexico City has legalized both abortion and gay marriage, these have become politically-charged issues in Mexico.
Animator Sanjay Patel, an artist at Pixar who's worked on "A Bugs Life" and "The Incredibles," tries his hand at Hindu mythology.