Editor's note: The documentary "The Women Who Would Be Queen" airs internationally April 23 and in the U.S. April 24th on CNN.

Related: Special Coverage of The Royal Wedding on CNN.com

Editor's note: CNN's Soledad O'Brien speaks with actor Kevin Costner about technology that separates oil out of water.

Editor's note: CNN's Soledad O'Brien takes a look back at the past year since the explosion on the Deepwater Horizon oil rig.

Editor's note: Soledad O'Brien reports on where things stand on the eve of the first anniversary of the Deepwater Horizon tragedy.

Related: Special coverage of the Gulf Coast Oil Disaster

Editor's note: CNN's Soledad O'Brien reports on the controversy surrounding a popular book by Greg Mortenson.

Related: 'Three Cups of Tea' author threatened with lawsuit for defamation

Editor's note: Soledad O'Brien reports on a controversial email about President Obama sent by a California GOP official.

Related video: Local GOP chair weighs in on Obama email

Related: Soledad O'Brien's Reporter's Notebook

Related video: CNN reunites family after quake

Sarah Palin takes aim at Pres. Obama's "Sputnik moment" reference. Are her facts straight? We're Keeping Them Honest.

CNN's Soledad O'Brien and her panel discuss Sarah Palin's criticism of President Obama's State of the Union address.

Soledad O'Brien
CNN