Cancer officially recognized as ground zero side effect

The worst fire in Colorado's history, the Black Forrest fire, has consumed 24 square miles. While the flames have finally died down, the danger is not over yet. Firefighters still must extinguish embers deep in the forest floor. Barry Peterson reports.

During the past eight years, Iran has refused to open its nuclear program up to international scrutiny. But on Monday, President-elect Hassan Rowhani said Iran was "ready to show more transparency to the world." Elizabeth Palmer reports.

The civil war in Syria is starting to impact neighboring countries. The United States is sending the Assad dictatorship a message by holding joint military exercises with Jordan. Clarissa Ward reports.

Last summer, Jack and Jasinda Wilder and their five children were deep in a financial crisis. In desperation, the couple self-published a series of steamy romance novels that started picking up followers online. In a year, the rookie authors had sold more than a million e-books. Anthony Mason reports.

The U.S. and Russia still disagree about the Syrian civil war and how to end it. The tensions translated to awkward body language at a meeting between President Barack Obama and Russian President Vladimir Putin. Major Garrett reports.

From a secret location in Hong Kong, someone claiming to be Edward Snowden defended the leak of classified U.S. intelligence programs. The chat took place on the website of "The Guardian," which published Snowden's leaks. Bob Orr reports.

John Martorano testified he was James "Whitey" Bulger's chief executioner and best friend. He said that loyalty evaporated when he learned Bulger was a government informant. Elaine Quijano reports.

An Arizona law required residents to show a driver's license, birth certificate, passport or other proof of citizenship when they registered to vote. The state said it was necessary to combat fraud, but the Supreme Court ruled Monday that Arizona was asking too much. Jan Crawford reports.

Tens of thousands of Harley Davidson motorcycle owners trekked to Vatican City to mark the machine's 110th anniversary with a blessing from Pope Francis. Allen Pizzey reports.

Mayor of Glasgow, Montana, says his town welcomes the Keystone pipeline, but other Montana residents have doubts. Michelle Miller reports.

Federally-funded education programs like Head Start face cuts in staff and salaries due to the sequester, putting a strain on the families who rely on them for their children's education. Magalie Laguerre-Wilkinson reports.

Nelson Mandela remains in the hospital for the ninth day in a row, but his health is reportedly improving. A debate is growing on how much medical treatment a man in his condition should receive, and whether it's time to let him go. Mark Phillips reports.