What if doctors could prescribe something to treat social isolation in seniors? It's happening now in Silicon Valley.

More than five million Americans have Alzheimer’s or similar illnesses, and that number is growing as the population ages - without any immediate prospect of a cure, advocacy groups have begun promoting ways to offer people with dementia a comfortable decline instead of imposing on them a medical model of care, which seeks to defer death through escalating interventions. An Arizona nursing home offers new ways to care for people with dementia.

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.

Young people are often viewed as needing protection or needing correction. However, a Boston organization is creating young peacemakers and powerful change makers by taking kids seriously and giving them the tools to act on their ideas.

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.

Team Rubicon, a non-profit organization of military veterans that provides disaster relief, has provided relief after flooding in Detroit, tornadoes in Oklahoma, a typhoon in the Philippines and an earthquake in Nepal, among dozens of other communities across the globe.

Two columns on Time Banks, where people swap services – teach calligraphy to one neighbor, and get computer repair from another neighbor. Time Banks create community and make people healthier – which is why hospitals and clinics are now starting them.

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.

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.

The United States now has a variety of federally-supported nutrition programs, but the health care system remains disconnected from the social determinants of health. Many doctors simply lack the resources to provide the comprehensive care proven to have greater impact on health than strictly medical treatment. A group called Health Leads is training young volunteers to treat the social factors, like poor nutrition and housing needs.

Some inner city schools, nonprofits, and businesses in New York lack the staff to make their organizations function for the people they serve. ReServe is a program that links retired professionals with part-time jobs in schools, libraries, hospitals and other city agencies to help fil this gap.