That means building futuristic structures that use wastewater and solar power to produce hydroponic (grown in a nutrient-rich water, without soil) and aeroponic (grown in water-saturated air) crops.

FORBES: Skyscraper Farms: A Name To Know In 2011

These are boxes containing air that is super-saturated with water vapour.

ECONOMIST: Global warming

On Thursday I reported from the CEH on the latest findings about how much water has soaked into the ground - and saw a bore-hole used for measuring water levels actually spouting out water because the ground was so saturated.

BBC: Predicting the next big flood