Fixing Montreal's Raccoon Problem

Larger green spaces may be critical to a city, as they can support more complete ecosystems. In contrast to smaller "parklets," large parks paired with high-density neighborhoods allow for healthier cities.

Illicit activity is rampant in the rundown motel rooms dotting Costa Mesa’s Harbor and Newport boulevards. Officials think they finally have a plan to make some of those motels disappear: Property zoning.

Poor neighborhoods in the United States lack quality play spaces for children, also known as play deserts. An organization is enabling communities across the nation to build their own playground.

Great minds from Plato to Piaget have recognized the importance of play in healthy child development, but with bullying becoming more prevalent on school playgrounds and increased pressure to maximize school hours to boost performance on standardized tests, schools are struggling to implement meaningful recess. Playworks and other similar non-profit groups provide coaching for adults on how to help structure children's playtime to be healthy, productive, and enjoyable, while allowing children to explore on their own and develop positive relationships.

Overall, Cambodia is a relatively poor country whose residents don't own much. Norwegian hotel owners in the city of Krong Siem Reap urge their Cambodian staff to be more in charge of making their own decisions by making them co-owners of the hotel, an act that forced them to have more confidence and critical thinking skills.

Each year, close to three million dogs and cats are killed in shelters - in some cities more than 70 percent of the animals in shelters are euthanized. Target Zero is a program that works with fellow cities to spay and neuter animals and return them to the streets. Public complaints about animals have plummeted, and many shelters are well on their way to achieving a 'zero-kill' status.

Veterans who suffer from post traumatic stress disorder number about one-fourth of military personnel returning from Iraq and Afghanistan conflicts, roughly 500,000 veterans so far. Inmates in prisons nationwide train dogs as companions for these war veterans, providing a sense of healing for all.

A robust population of grizzly bears can be an indicator of healthy land; however, the bears also can destroy grain bins, consume vegetation, and kill livestock. Ranchers work with the Canadian government and local conservation groups to protect their resources with bear-proof grain bins and electric fences.

As a state with robust populations of wildlife, Montana has had its share of roadkill. Its Department of Transportation developed animal shelving, a type of wildlife crossing, to enable safe passage for small animals who need to cross the road. The measure, combined with other types of crossings, has reduced animal-vehicle collisions by half.

Despite strong evidence that school-based physical activity improves children’s cognitive skills, concentration, and behavior, schools under pressure to produce quantitative results and decrease bullying have drastically cut back on recess in recent years. An Oakland-based nonprofit organization called Playworks is working to make healthy play accessible for more children and show schools how productive recess can be to the whole academic world.