Marijuana start-up WeedMaps covers consumers' every need.
Phoenix says it has among veterans. Next it's aiming for the broader homeless population.
Antonio Olmos memorialized the city's often-overlooked tragedies. In the process, he gained a new perspective on violent crime.
Familiarity and social ties influence our decision to intervene on behalf of others.
A group of doctors is trying to convince young Britons that stabbings are serious.
Instead of arresting public drunks, Amsterdam has tasked them with cleaning up a local park. Payment: €10, some rolling tobacco and 5 cans of beer.
Someone shot at a group of officers in broad daylight in Wilmington, Delaware, and no one will speak up.
Earl Sampson, 28, has been stopped 258 times, searched more than 100 times, and jailed 56 times ... in four years.
One photographer lines up images of Dallas on its darkest day with his own photographs from today.
New York City's Midtown Community Court is a national model for a different approach to dispensing justice.
Where it's "safe" to live if you're more worried about cops than criminals.
Some of Chicago's neighborhoods have become much more dangerous, even though crime has plummeted citywide.
A stabbing attack in New York's Riverside Park acts as a reminder about the way cities really work.
In many places in the U.S., the population is getting older and younger at the same time. And that has big implications for public health.
Non-war zone killings in cities in Latin America, the Caribbean, and Africa are far outpacing traditional armed conflict.
And educators need to figure out ways to encourage social mixing opportunities among students.
All are expected to survive; police say the attack was gang-related.
Officials have confirmed that at least 13 people are dead.
It's your body, but it's not your choice.