10 Things to Know Today

Your daily look at late-breaking news, upcoming events and the stories that will be talked about today:

1. HIS RE-ELECTION IN DOUBT, OBAMA PROMISES HAPPIER DAYS

“Our challenges can be met” to repair economy, revive the nation, the president says.

2. PRINCE HARRY IS BACK IN AFGHANISTAN

The British royal will fly Apache attack helicopters during a four-month tour of combat duty.

3. A $1 MILLION MYSTERY

The purported theft of Romney’s tax returns has all the trappings of a high-tech whodunit.

4. DREW PETERSON CONVICTED OF MURDERING HIS THIRD WIFE

Next puzzle for prosecutors: What happened to his fourth?

5. LATEST KENNEDY ON THE POLITICAL SCENE

RFK’s grandson, Joe Kennedy III, wins primary in bid for House seat once held by Barney Frank.

6. THE NEW KINDLE TAKES AIM AT APPLE

The AP’s Ryan Nakashima puts the device to the test, finds that the HD screen is a big improvement.

7. WHY MAMMOGRAMS COULD BE DANGEROUS

A new study indicates their radiation might increase chances of breast cancer for some high-risk young women.

8. WHERE OTHERWORDLY TIRE TRACKS ARE VISIBLE

NASA rover Curiosity’s trails on Mars have been photographed by a satellite circling the planet. NASA MARS

9. AMY POEHLER, WILL ARNETT SPLITTING

The TV sitcom stars have been married nine years and have two children.

10. A SUPRISINGLY TAME MTV AWARDS SHOW

For those looking for blockbuster moments, a saucy Rihanna number is about it.