Irrigation

Dutch startup aQysta, a Delft University of Technology spin-off company, manufactures what's known as the Barsha irrigation pump. It can reportedly boost crop yields in developing nations by up to five times, yet requires no fuel or electricity to operate.

The team at 22Seeds have developed a smartphone-controlled irrigation system that uses local weather data to determine and set customized watering programs.

A new system of floating barriers protects levees from the erosive effects of waves.

A British engineering student has invented a mobile bicycle-powered water pump, which is being used in rural Guatemala.