Questions about the appropriate use of lethal force have been raised after police fatally shot Miriam Carey Thursday near the U.S. Capitol. Carey had tried to breach a White House security checkpoint with her car before speeding toward the U.S. Capitol. Melissa Block talks with Eugene O'Donnell, a former officer with the New York Police Department and certified police trainer, about the standard protocols for using deadly force.

The latest on Miriam Carey, the Connecticut dental hygienist who was shot and killed by Capitol police Thursday after she drove into barriers near the White House and led police on a chase through Washington, D.C., streets.

President Obama sought to turn an "impromptu" lunchtime stroll into a chance to neutralize a damaging shutdown quote from an administration official.

Urban agriculture abounds in Los Angeles county but few people could see the big picture of what was actually happening around them. So university students set out to create a baseline of data in the country's most populous county to help urban planners, regulators and agricultural pioneers make sense of it all.

A senior U.S. government official says some intelligence agencies are able to focus only on the biggest threats: counterterrorism and nuclear nonproliferation. So other issues are falling by the wayside.

The system, which has been traveling through the Gulf of Mexico, is expected to make landfall in Louisiana.

As the budgetary stalemate in Washington continues, many federally funded science projects are now on hold. Matthew Hourihan of the American Association for the Advancement of Science describes some of the effects of the funding impasse on research programs, from the CDC to NASA.

Kuma's Corner, a Chicago eatery, says the dish is in honor of a Swedish heavy metal band that dresses in religious robes. Critics say it makes a mockery of something that is holy to Catholics and many other Christians.

A new film The Fade shows that from Accra to New Jersey, the barbershop has a special place in the black community. Host Michel Martin talks to the film's director, Andy Mundy-Castle about what he learned from following four barbers across the world.

The debate over the Affordable Care Act has been at the heart of the government shutdown. Host Michel Martin asks two conservative thinkers why they think shutting down the government is a better option than allowing Obamacare to kick in.