Why your favorite bench might be there to thwart a terrorist attack

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.

Cars heavily influence building planning in the U.S. due to a historical preference for suburbs, but a town in Illinois improved its economy by thinking like a city. They created transit-oriented development which prioritizes pedestrians and attracts millennials.

Shreveport, Louisiana, faces blight. New Orleans decreased blight by 30 percent by creating an authority for the task, using technology to collect data, and providing residents with information and help.

A Dallas urban neighborhood was dilapidated with abandoned storefronts and offered no vitality for pedestrians. A group of artists and community members created Build a Better Block, in which local artisans and small businesses took over a vacant block and transformed it for a limited time to encourage the ingredients for more permanent urban renewal.

Alleys in Seattle were once places of illicit, illegal, and unsanitary activity. The International Sustainability Institute in Seattle began organizing music and art events to bring in people, which, in turn, cleaned-up the crime and garbage. As an urban development strategy, adjacent vacant storefronts re-opened for business and beautification could be seen in new gardens.

The Oak Cliff neighborhood in Dallas suffered from recession-closed businesses and crime. Then community members used placemaking, in which people shaped their own environment to improve the quality of life, and the concept of Build a Better Block, which was a pop-up event showcasing art, food, music, and local faire. The idea gives citizens a fresh look at the possibilities through which to transform the space in which they live, and it has attracted attention across the country and around the world.

Although residents turn up their air conditioners, Louisville heat is increasing the city’s death rate by 39 people every year. The city mayor launched a tree commission for planting more trees and since 2011 has planted over 12,000 trees. The canopies from the tree offer cooling shade and bring down the temperature of the city as a whole. The response also includes the installation of green roofs and in-depth research on urban heat islands.

While billions of taxpayer dollars are allocated each year to support shelters and social service initiatives, homelessness remains a persistent problem in the U.S. - in 2013, an estimated 610,000 people slept without shelter every night. All over the country, people are building "tiny homes" to give to the homeless, providing them with shelter, a bathroom, and a kitchen for less then the cost of a shelter.

In Fayetteville, the Mayor and Police Chief have taken a personalized approach in seeking a solution for blighted, low-income neighborhoods and are working to increase the number of city staff on-hand to help address issues like decrepit buildings, as well as decrease the disparity in resources allocated to maintaining these neighborhoods. But many challenges remain, and the line between the government's role versus the private homeowner's responsibility remains difficult to define.

Cities tend to be dangerous and difficult places to live for older residents. A private public partnership in New York is catering to seniors through small changes in the city such as para-transit options and seniors-only hours at public establishments.