Zipline's AI drones are boosting access to medical products at rural hospitals in Kaduna

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.

In an agricultural system designed for big-industrial growers, many farmers struggle to bridge the relationship between their produce and consumers, as well as strengthening local economies. The food hub is a collection of buildings that process and distribute the sale of local food. Eastern Market in Detroit is an example of a food hub that makes local produce accessible to low-income neighborhoods.

During rain seasons in Bangladesh, rivers flooded villages and their agriculture so that local economies and food supplies were in jeopardy. A Bangladeshi non-profit Shidhulai Swanirvar Sangstha introduced small floating farms designed to be run by women. Consequently, the organization has initiated 40 floating farms that serve 300 rural women and save local agriculture.

A follow-up article on Husk Power Systems, which has created a scalable system to turn rice husks into electricity that is reliable, eco-friendly and affordable for families in India. The company bases their business model around local involvement, grassroots systems that cater to the immediate community, and continual accountability. This article fills in some information gaps from the initial piece, "Fixes: A Light in India."

Two columns on microconsignment, a new variation on microcredit that helps poor people living in developing countries - particularly women in rural villages - start small social businesses without taking on debt or requiring previous business skills. The organization, Soluciones Comunitarias, partners with a non-profit and a university student program to manage the supply chain and other components of the business necessary to support the social entrepreneurs in successful micro-ventures.

In a mountainous region of Lesotho, a man named Tsepo Kotelo visits 20 villages every week on his new motorcycle to provide health care to local villagers. The Elton John AIDS Foundation gifted the motorcycles to Kotelo and his colleagues, allowing them to increase the number of patients they visit by 600 percent. An organization called Riders for Health helps maintain the bikes, ensuring that remote villages will continue to receive medical care.

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.