Rwanda's 'solar smart kiosk' provides digital solutions to rural mobile phone users

Lack of reading material is not only a third-world problem – many poor families in the United States lack access to and funds for books. A program that helps get books to into the homes of low-income families can boost literacy, and help publishers, too.

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.

Farmers in Vietnam face rising sea levels but rejected the city's water engineering projects. They prefer gradual measures to cope with climate change so scientists have allowed the farmers to steer the conversation.

Louisiana and Vietnam both need affordable solutions to rising sea levels. Leaders from Vietnam visited Louisiana to compare ideas.

Most insurance companies avoid insuring poor farmers because the transaction costs are too high, but a non-profit in Kenya created a sustainable way to cover them.

The non-profit Root Capital created a lending initiative in Mexico which helps mid-size rural farmers gain access to capital, skills, and consumer markets from which they would otherwise be excluded.

The company that manufactures Lifestraw, a water purification device, has found a way to distribute their product to impoverished Kenyan families for free, while still making a profit. In the global carbon credit market, businesses receive carbon credits for projects that reduce greenhouse gas emissions. These credits can then be sold to companies who need to offset their carbon emissions, allowing green companies to make a profit off of their small ecological footprint.

Access to electricity in India takes a huge economic, educational, and health-related toll. A small company called Husk Power Systems has created an innovative system that is turning rice husks into electricity and illuminating India’s poorest state.

Ecological toilets that use natural composting to break down waste are simple to construct, waterless and are easy to fix. But as philanthropists are finding, getting these to those that need it most is harder than anticipated.

Programs to get fresh produce carts to areas with no access to healthy food work best when government and determined entrepreneurs team up. Success from this model is evident in New York City, where the city has incentivized the selling of fruits and vegetables by street vendors in areas that are in the most need of the produce.