The arid Southwest has a proven irrigation model, the acequia, for water use that is local, democratic, and resilient to heat ...

However, the apparent success of this system masks an underlying fragility ... plants can tap into the trapped water and sediments and safely grow without the need for further irrigation. Critics ...

Nuwara Wewa, which was built over 2,000 years ago according to tradition, has no records of any internal investigations or repairs since it was built, according to Gunasekara. This is the case for ...