NPR News

Iran has unveiled significant developments on two important components of its nuclear program: the centrifuges used to enrich uranium and the uranium used to fuel a research reactor.

The country has made no secret of its work in these areas. But the news on Wednesday suggests that Iran may be making progress in its nuclear program.

Iran also announced that it is cutting off oil sales to several European nations, only to reverse itself hours later.

Parents are divided on how best to handle teenage drinking. Should they prohibit it outright, or let teenagers drink with parental supervision?

Some parents think they might as well say OK, since the kids will drink anyway.

But researchers in the Netherlands have found that parental disapproval can be a powerful force to keep teens from succumbing to the impulse to drink.

Ready to say goodbye to a sliver of your Snickers? And how about a slightly slimmer Mars bar? By the end of 2013, chocolate-maker Mars says all of its chocolate bars will be under — or right at — the 250-calorie mark.

The 2-ounce Snickers currently sold in our NPR vending machine has 280 calories, and with the downsize it will lose about 11 percent of its size. The fun-size and the king-size bars currently range from 70 to 540 calories, which means the new 250-calorie limit spells the end of the king-size bar.

It's the story that continues to, well, dog Republican presidential front-runner Mitt Romney. And, according to some experts, it could jeopardize his standing with voters who care about animals. And yes, it turns out, that is not an insignificant voting bloc.

The incident happened back in 1983, and it's been public since 2007. But it seems that only now a critical mass of voters is hearing it for the first time.