San Francisco's free compost, which comes from sewage sludge, is being protested by an environmental activist group, which says it may contain harmful chemicals.
PENNSYLVANIA: The state requires background checks for handgun buyers, and requires gun dealers to obtain a state license. This ranking of states with the strictest gun laws is from the Brady Campaign, a nonpartisan anti-gun violence group. Here, protesters in Philadelphia participate in the Silent March to Protest Gun Violence in July 2000.
The expanded use of full body scanners at US airports raises familiar privacy concerns, but also questions about cost and efficiency.
The massive effort to find San Diego-area teen Chelsea King highlights new ways technology can help in missing persons cases.
A racially themed party and an incident involving a noose have roiled UC San Diego. But if the school handles the incidents appropriately, some academic experts say, students could ultimately benefit from an enhanced classroom experience.
Gun owners in California have been wearing their handguns in coffee shops and restaurants. The guns are unloaded and legal, but some citizens and police departments are wary.
The 'killer whale' accident at SeaWorld Orlando has some parents questioning the value of bringing children to zoos and animal parks.
A Sea World trainer was killed in Orlando, Fla., Wednesday by a 'killer whale.' Animal rights groups say the tragedy shows why the giant orcas do not belong in theme parks.