What has six-hundred tons of volcanic rocks sitting in a giant steel tub, thousands of gallons of water spouting from a network of pipes, and 1,800 sensors scattering three identical hillslopes collecting information? If you guessed the world’s only and largest manmade experimental watershed, then you’re correct! (more…)

The planting of so-called “fertilizer trees,” indigenous tree species that draw nitrogen from the air and replenish the soil, has significantly improved the crop yields in five African nations over the last two decades, researchers say.

Since the 1980s, when the World Agroforestry (more…)