The wildly popular photo-sharing site Instagram nearly caused a user revolt when it revamped its terms of service and privacy policy to suggest it could allow uploaded photos to be used in ads without users' permission.

The change — which was posted in dense legalese on its website Monday — sparked users to vow to stop posting their color-filtered, tilt-shifted photos to Instagram.

If President Obama takes the lead in a movement for more effective gun control now that he's been stirred to action by the Sandy Hook Elementary School massacre, it would mark a significant break from his pattern so far as chief executive.

For while Obama has dutifully served as the nation's consoler in chief in localities where the all-too-frequent mass shootings have occurred, that has seemed the extent of the official response observable to White House outsiders.

More than 100 chimps retired from medical research are about to get a new home.

Most of the primates who have been living at the New Iberia Research Center will soon make their permanent residence at the Chimp Haven sanctuary, the National Institutes of Health said Wednesday.

The National Rifle Association of America has broken its silence to comment on Friday's gun violence that ravaged a tight-knit Connecticut community, releasing a statement in which the gun-owners' rights group said it "is prepared to offer meaningful contributions to help make sure this never happens again."

It's a nervous time for companies that make and sell guns.

On Tuesday, Cerberus Capital Management, a private equity firm, announced it was selling its stake in Freedom Group, maker of the American Bushmaster AR-15 rifle, which was used in the Newtown killings last Friday, along with other brands such as Remington.

Transcript

MELISSA BLOCK, HOST:

From NPR News, this is ALL THINGS CONSIDERED. I'm Melissa Block.

ROBERT SIEGEL, HOST:

And I'm Robert Siegel.

"Everyone calls me Geppetto," announces Lou Nasti. "I mean, look at me: The glasses, the gray hair — and I play with dolls. Come on."

A growing number of lawmakers are indicating they are open to considering new gun control measures in the wake of Friday's school shooting in Newtown, Conn. But while much of the national debate has focused on limiting access to guns, others are suggesting that schools should arm themselves to defend against attacks.

David Thweatt, school superintendent for the small Texas town of Harrold, northwest of Fort Worth, decided in 2006 that it was time to arm his staff. There's only one school in Harrold, a K-12 with 103 students.

Parents drill certain warnings into their children: don't drink, don't smoke and don't do drugs. But those conversations have gotten tougher now that two states, Colorado and Washington, have decriminalized some recreational marijuana use.