An increase in toxic chemicals in cigarettes may also be to blame for the high risk of bladder cancer for women who smoke.
Smoking rates have dropped over the last several years, but they now seem to be stuck at about 20 percent for the nation. And nearly as many women now smoke as men, according to the Centers for Disease Control and Prevention.
Busted. That's what we in the news media are in the matter of the presidential campaign of Rep. Ron Paul of Texas.
Famous and not so famous critics have pointed out in the past day that journalists for the most part have ignored Paul even when he succeeds at a level other Republican presidential candidates haven't.
As far as many political reporters have been concerned, the congressman might as well be wearing one of those Harry Potter invisibility cloaks. He's there but we apparently can't see him.
Scientists now know why coffee rings have have dark, well-defined edges, as seen in the image above. The research finding may have implications on the development of inks and paints.
Credit Marina Dominguez / NPR
A lot of simple things in science turn out to be quite complicated. Take, for example, coffee: you may have noticed that a spilled drop of coffee doesn't dry as a brown blob, but rather as a clear blob with a dark ring around the edge.
It's taken physicists more than a decade to figure out why this effect, known technically as "the coffee ring effect," happens. But now they think they have an answer.
A carbon fiber tobacco moth wing created by Maj. Ryan O'Hara flaps 30 times per second and was photographed using a strobe light.
Credit Noah Adams / NPR
At the Wright–Patterson Air Force Base in Dayton, Ohio, some Ph.D. candidates are working on micro air vehicles, or tiny flying machines that are remotely piloted.
The micro machines are often "bio-inspired" — study a bird or an insect and then build one.
"If you close your eyes and think of a fat pigeon, that's about the biggest size that we want to use." says Leslie Perkins, who worked with the micro program at the Air Force Research Laboratory. She says the smallest would be about the size of a dragonfly.
The conference for the best hackers in the free world is held every year in Las Vegas. It's called DefCon. The entrance fee is $150, cash only. (And it's a bad idea to use the ATM at a hacker conference.)
There are lots of hacking competitions at DefCon, most of which are complicated and technical. But one contest is very simple.
Former Senator Bill Frist just came back from a fact finding-finding mission to the border of Kenya and Somalia. He and Jill Biden, the vice president's wife, visited the Dadaab camp, which was designed for 90,000 but its population of Somalian refugees has swollen to 430,000.
People often talk about the characters in books as if they were considering who to invite to a dinner party. "Oh, I just hated her — she was so mean." "He's a bully; I didn't like how he treated his mother." There's something to be said for a likable character, but fiction has a way of upending our ordinary standards. In life we like tranquility; in books we love tension. And in these three books you'll find protagonists who you'd hate to meet — you'd change train cars to get away from any of them — but who you'll love on the page.
The new Gallup poll, which finds that only 13 percent of the U.S. public approves of how Congress is doing its job, is the group's first sampling since the debate over the federal debt ceiling. Many Americans watched an 11th-hour vote on that deal on TV, as pictured here.
Credit Andrew Burton / Getty Images
Only 13 percent of the American public approves of how Congress is doing its job, according to a new Gallup poll. The low-water mark ties the all-time low set this past December, when Americans grew tired of the lame-duck Congress.