Loneliness can kill you — but is it government's job to solve it?

In India, videos made about the many social problems are secretly broadcasted in different villages to make people aware of the real problem and also aware of what they can do to fix it. Video Volunteers, an organization that coordinates these video productions, catalyzes community change through transparency and accountability.

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.

Harassment on the internet is more accepted but just as harmful as it is in person. RiotGames, a game publisher, decreased abuse by enabling its gaming members to decide and enforce community norms.

Through the Burbank Senior Artists Colony - a community created by EngAGE - low-income seniors learn how to become artists. The recreational classes hosted by the community keep people feeling phsyically and mentally young, allowing them to focus on recreation instead of financial hardship.

Sexual assault, rape, and sexism are social problems that young women face and many feel powerless to create change. Non-profit organizations such as SPARK and WAM have trained teenage girls to be advocates for themselves. Online campaigns and social media have also made teenage girls feel empowered to express themselves and make social change.

PrePex, a new nonsurgical circumcision tool, could revolutionize the prevention of H.I.V. and AIDS in sub-Saharan Africa. Cheap and easy to assemble, the device has proven successful in several randomized trials.

The Jaipur Limb organization based in India has developed prostheses at low cost, and services are free for the poor. The organization’s efforts have recently spread to other countries with impoverished people. Jaipur Limb reaches patients through branch clinics, traveling workshops, and limb camps in cities around the world.

A prosthetist from Texas visiting Jaipur Limb workshops in Honduras saw problems with their low-cost prosthetics - the issue wasn't the design of the leg, but the technicians at the Honduras workshops were people completely new to prosthetics who were given just eight weeks of training. Thanks to his research, Jaipur established a research and development unit to improve the limb.

Colorful volumes of books have aided teaching for centuries; however, the scope of engagement in the internet age demands newer methods for pedagogy. Pinterest, a social media-constructed visual bulletin board, has become a venue in which teachers share their pinned visual media, lesson plans, and charts with students and other teachers. The success of Teaching Pinterest expands pedagogy, reduces teacher alienation, enables collaboration with other teachers, and directs readers to other sites that offer teachers’ curriculum ideas for a cost.

In war zones, people have a difficult time finding clean water and safe areas to inhabit. Social media, smart phones, and technology applications are aiding in people’s survival. In Aleppo, Syria, the International Committee of the Red Cross posted a map on Facebook to show alternative sources of clean drinking water that reached approximately 140,000 people.