New research shows how irrigation affects regional climates and environments around the world.

Dams could play a significant role in sustainably feeding the world. But they should only be built as a last resort, researchers say.

A new wireless system that measures soil moisture in real time could both improve crop yield and reduce water consumption.

Groundwater wells supply drinking water to more than half of the world's population. But one in five is at risk of running dry.

"...while global warming increases the likelihood of hot extremes almost globally, in some regions, irrigation expansion cancels or even reverses this effect.”

A new system that combines a simple digital camera with a miniature infrared camera keeps an eye on crops and let farmers know when it's time to irrigate.