Tiny Columbus, New Mexico (population, 1,678) is hot, flat and uncrowded  an ideal place to launch a new green revolution in agriculture.

We live in a world where both the number of hungry and the number of obese people is rising,” Evan Fraser tells OneZero. As the research chair on global food security at the University of Guelph, Fraser spends a lot of time thinking about how and what we’ll eat in the future given this present dilemma, and he thinks one solution might already be growing naturally in ponds and lakes.

Brazilian blue-green algae can be produced without harming the environment.

Across Africa, many rural communities face a growing sanitation crisis. Wastewater treatment systems, where they exist, are often old, overloaded, or broken. In some towns, untreated sewage flows directly into rivers, contaminating water sources and harming both ecosystems and public health.