What the world can learn from Singapore's safe and squeaky-clean high-rise housing projects

Many subprime borrowers in the United States are financially unable to buy a home themselves. An unconventional lender is trying to make it easier for low-income people to buy houses despite the tighter requirements that other lenders adopted after the mortgage bust.

While some parts of the United States struggle with drought, others are faced with more water than they know what to do with. Minnesota reconstructs roads and drainage systems in order to be more prepared for the large amounts of rain fall they have received, largely due to climate change.

At least 25 percent of female veterans were sexually abused in childhood, making it more difficult to reenter civilian life. Volunteers of America runs a holistic housing program for homeless veterans in the U.S.

An innovative program by an unusual bank allows low-income people in Cambodia to take out a 15-year fixed mortgage with little or no documentation - contradicting traditional loan assumptions and creating means for some of the country's poorest people to completely change their lives. The bank and its investors are now making a profit, and more than 700 mortgages and building loans have been provided.

New York City black tar roofs cause a number of environmental problems, including air pollution, heat absorption that raises energy consumption, and storm water runoff in the sewer system. Efforts to turn these old roofs into green spaces cool the buildings, enable the containment of more rainfall, reduce sewer discharge, generate energy, and absorb carbon emissions. New York City has a pilot program offering financial help for green roofs.

By the 1980s, Roxbury and north Dorchester had been devastated by the disinvestment and white flight of the 1960s and 1970s. Racist banking and housing policies (“redlining”) had segregated people of color from opportunity, barring them from getting home loans except in certain neighborhoods. So the Dudley Street Neighborhood Initiative (DSNI) brought together residents to develop their own comprehensive plan to revitalize their community, building a community food system along the way.

For the past three years, water levels in the San Antonio Edwards Aquifer have decreased to uncomfortable levels and drought periods may continue as the population booms. The San Antonio Water System organization has set up rules to limit water use and has recycled water for conservation frugal innovation.

New York City suffered from fires that erupted in overcrowded, run-down apartments. Then the city sleuthed through residential records and found that landlords who foreclosed let their properties fall apart and ignored safety-code violations. Greater Toronto wants to expand upon New York City’s method by using transportation surveys, census data and computer data to build transit lines.

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.

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.