Social impact bonds funnel private capital into philanthropic projects. Investors receive a return based on whether the project saves public money by addressing the social issue it targets.
Some 1.3 billion people worldwide live without electricity, affecting health, lowering incomes, and making education difficult. Low-cost solar energy programs are beginning to meet the need.
Sack farming allows people to grow food in places with limited access to good land and with little water. It's already making a difference in dry regions of Kenya.
The Student Diplomacy Corps gives rural and urban students a chance to see the world while deepening their understanding of global issues – and each other.
The Mobile Factory turns rubble from disasters into Lego-style building blocks that snap together without cement or mortar, allowing the building to flex under stress.
Their work could prove vital in a country where unexploded devices, including mines and unexploded shells, have killed nearly 20,000 Cambodians and wounded about 44,000 since 1979.
High-elevation communities in Peru are using greenhouses to grow more nutritional crops than the climate ordinarily allows.
Sri Lanka is the first nation to promise to protect all its mangrove trees, which provide breeding areas for marine life and protect coastal communities from storms and erosion.
Through her nonprofit Brighter Today, Mansi Prakash has brought cheaper, better lighting to more than 5,000 homes in a rural village. And she's not stopping there.
Rescues 2the Rescue, a partnership between the International Fund for Animal Welfare and Working Dogs for Conservation, places high-energy dogs in jobs that benefit from their spunk.
A pilot project offers farmers in India the opportunity to sell the excess energy generated by the solar panels that drive their water pumps.
The Bill and Melinda Gates Foundation was once more the biggest recipient of Warren Buffett's $2.8 billion in charity this year.
The engineering professor is seeking to lure more young women into STEM fields. The Next MacGyver competition is one way.
Today the retired British policeman's nonprofit Casa Ioana is a place where women and children can go to feel safe and learn how to rebuild their lives.