After some rocks spontaneously ignite in woman's pocket, burning her and damaging her home, the hunt is on to find the cause of this unusual incident. KNBC's Vikki Vargas reports.

NYC Mayor Michael Bloomberg has touched off a nationwide controversy with his efforts to combat obesity. He joins Andrea Mitchell Reports to discuss the proposal.

NBC News' Gabe Gutierrez reports on John Edwards' campaign finance trial after the jury found him not guilty on one count. The judge declared a mistrial on the remaining five counts. NBC News' Pete Williams, Savannah Guthrie and former prosecutor John Q. Kelly provide analysis on the case.

The jury delivered a unanimous verdict on one of the six felony counts and found Edwards not guilty of receiving illegal campaign contributions from heiress Rachel 'Bunny' Mellon. The judge declared a mistrial on the five other counts. Edwards later told reporters that he knew he had not done anything illegal but that he was accountable for his behavior. NBC's Lisa Myers reports.

NBC's Savannah Guthrie examines how the legal terrain of political campaigns has changed since John Edwards ran for president in 2008.

In the largest motor carrier crackdown in American history, the U.S. Department of Transportation shuts down 26 low cost carriers over safety concerns. Brian Mooar reports.

Both suspect and police are shocked when job application leads to a 1975 murder warrant. Chris Gordon reports.

An honest Ohio waitress who was expecting a $700 tax refund check instead received one for over $400,000. WKYC-TV's Dick Russ reports.

The Defense of Marriage Act, which denies federal benefits to same-sex couples, was declared unconstitutional Thursday. NBC's Matt Lauer reports.

President Obama phones Mitt Romney to congratulate him for locking up the GOP nomination. NBC's Steve Handelsman reports.

Now that Mitt Romney is the official GOP presidential nominee, President Obama placed a call to the former governor to congratulate him. Meanwhile both campaigns have already spent a combined $85 million on TV ads. NBC's Chuck Todd reports.

David Axelrod, a senior adviser for President Obama's re-election campaign, speaks with TODAY's Matt Lauer about the President's strategies for taking on the battleground states and rekindling the enthusiasm from 2008.

Nine people were hospitalized after a truck veered into a crowd outside of a California high school. KNBC-TV's Beverly White reports.

Two men were killed and three more people were seriously wounded in a shooting at a Seattle cafe by a gunman who fled the scene on foot. KING's Linda Brill reports.

The Emerald City, generally considered a safe place to live, had 19 murders already this year. Last year there were 20. NBC's Mike Taibbi reports.

A gunman identified as Ian Stawicki, 40, opened fire in a Seattle, Wash., café and a downtown parking lot, killing five, critically wounding one, and eventually taking his own life. NBC's Mike Taibbi reports.