The number of Americans asserting their right to carry concealed guns has exploded – from less than a million a few decades ago to as many as 11 million now. There's evidence that gun prevalence can deter crime, but preventable tragedies perturb.
Why Americans now carry handguns in so many public places, from parks to college campuses. Is it making the country safer or more dangerous?
Lila Rose, the young founder of the organization that released 'sting' videos targeting Planned Parenthood this week, is one of a new generation of right-wing media insurgents taking on touchstone topics like abortion through the lens of civil-rights activists.
In many ways, Sarah Palin mirrors the ethos of the gun-rights movement she promotes: never back down. Criticized for her rhetoric in the aftermath of the Tucson shootings, she's since posted a combative defense on Facebook and signed up to speak at a hunting and gun convention.
The Herschel telescope has spotted a vast hole in space. Scientists say it could provide clues to how newborn stars shake off their birth clouds.
Key GOP leaders came to woo the NRA's annual convention this weekend, one sign of the group's growing clout.
"Cowboy Blob" and other online commentators fill the press box at the National Rifle Association convention.