An American solar company is showing the world how to get electricity to poor families cleanly and efficiently, and how to make money at the same time.

In Para, Brazil, farmers are turning a profit and the government is on track to slow deforestation thanks to local nonprofit Imazon, which got them to work together.

A brand-new Mexican tech startup is making its products affordable using a centuries-old financing trick that lets startups and their customers shift their risk toward third-party investors.