An assistive speech software hopes to help thousands of Nigerians with visual impairment

Phone lines in Africa and South Asia would never have gotten to the poor - but these places have leapfrogged over last-century technology and gone straight to mobile phones. Now the same thing is happening with off-grid solar power: the fastest -- perhaps the only – way to power the poor.

The mobile phone is doing more than revolutionizing communication. It has the potential to improve many aspects of life in poor countries: commerce, health, agriculture, education - public health, especially, is being revolutionized by governments taking advantage of the mobile revolution by texting advice or sending voice messages to pregnant women, texting reminders to AIDS patients to take their meds, tracking the spread of diseases, allowing community health workers to keep records electronically and variations on all these themes.

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.

The H.I.V. infection rate in San Francisco dropped drastically after the city increased testing and created programs like Rapid, which immediately offer public health insurance, antiretroviral drugs, and personal counselors for people with AIDS.

The 2008 recession’s job losses spurred a development of a Do-It-Yourself economy. With the advent of Uber, Etsy, Airbnb, and others, the marketplace has become full of micro-entrepreneurs who thrive with independent web-assisted businesses.

For decades, AIDS has taken the lives of millions of people and infected millions more worldwide. The key to reducing the effect of AIDS, and even potentially curing it, involves treating patients as early as possible after being diagnosed with HIV, before the disease damages organs. San Francisco General Hospital developed the RAPID program for this purpose, with the goal of “Getting to Zero” the number of new infections and deaths.

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.

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.

Native American student graduation rates are much lower than that of any other demographic. The Red Cloud school teaches students on a reservation in South Dakota about the Lakota history to empower the kids and encourage resilience.

An average of 28,000 children born in the U.S. each year die before their first birthday – and many more face disabilities and serious life-long health problems, often because they are born prematurely or at low birth weights. A free service, text4baby, delivers crucial health advice via text message to pregnant women and new mothers.