SciDevNet: On a global level, climate change could slash crop yields and increase reliance on irrigation in the 2030s, but in some regions, including Southern Africa, agricultural output could increase and farming become less dependent on water, according to a study published last month (27 February). The researchers, based in Canada, China and Switzerland, set out to predict the combined impact of climate change on food production and water levels globally, regionally and locally. "Such a study not only...