Lots of studies have shown that cigarette smoke isn't good for a fetus. So many pregnant women use nicotine gum or skin patches or inhalers to help them stay away from cigarettes.
A few years ago, Megan Stern became one of those women. "I smoked heavily for the first seven weeks of my pregnancy because I didn't know I was pregnant," she says. "It was an accidental pregnancy, and I found out while I was in the emergency room for another issue."
Some of the sanctions against Iran will be eased under an agreement reached between Iran and six world powers over the weekend. In return, Iran promises to temporarily curb part of its nuclear program.
There's widespread agreement that sanctions have worked, squeezing Iran financially and bringing its leaders to the negotiating table. Iran's economy is, by any measure, in terrible shape.
Governor Hickenlooper explains a new rule he's proposing to reduce methane emissions from oil and gas drilling. Two of the companies behind the effort, Anadarko and Noble Energy have recently created a public education outreach organization on fracking.