Police chief, mayor tour city's rundown neighborhoods

A novel way to help young men growing up in communities in which concentrated poverty, violence and unemployment are well-documented barriers to health and longevity: male youth of color are trained to be the emergency response team to help stabilize street victims before doctors or nurses begin procedures.

Palm Beach County, Florida has many of the same social problems that Philadelphia has, including “gangs, drugs, and poverty.” However, their school system has managed to keep students safe by employing “safe-school case managers” who build relationships with students, and they offer a youth court that is a system run by students who peer-review cases of unrest. The initiatives in this county has prevented school violence from happening without metal detectors and just two police officers.

CitiStat has show great success in cities like Baltimore, where it has improved city services' efficiency (removing snow, fixing potholes, etc.). Many cities use Stat programs, but Baltimore has been a particular case of success. Looking at how it implemented its CitiStat program holds lessons for other cities.

In the past, Los Angeles was a dangerous city fraught with gang wars. Lately, though, LA has become a safer city due to six changes enforced by the police cracking down on public violence and gangs.

The use of a gun in a violent crime can carry a penalty of 30 years or more in prison. High Point, NC, has been using call-ins for 16 years - a carrot-and-stick approach aimed at reducing violent crime and drugs in the city.

Americans often want to connect to a cause beyond writing a check. Crowdsourcing is creating new forms of philanthropy globally, giving donors more choice and a stronger connection to the projects they fund.

Citizens in Cairo have been working to make the streets cleaner in an effort to create more pride for the country and get the government's attention. From picking up trash and painting lampposts to collecting donations from passersby, the community is working together to make a new Egypt.

Civic leaders in the U.S. struggle to effectively help their distressed neighborhoods. East Lake, Atlanta, created a replicable model that mixes residents of differing socio-economic status, and focuses on education and health in the area.

Global social and economic problems are difficult to change. However, fan-activism fuels the interests of fans of popular young adult fiction. Books such as Harry Potter and the Hunger Games have inspired activist groups that raise awareness of global hunger, reading, and relief supplies to impoverished nations, among others. Being a fan has served as a bridge to become politically active and solve the world’s problems.

Colombia has attempted to decrease murder and homicide rates by setting up curfews for teenagers, forcing bars to close earlier in the evening, and creating gun laws to prevent the carrying of weapons. As a result of this epidemiological, data-driven approach, along with other governmental factors, the homicide rate has decreased significantly in most of the cities in which it was implemented.