Solution for the world’s water woes

Nonetheless, the International Water Management Institute (IWMI) and other research organisations have identified new and more affordable opportunities for low-cost water investment. For example, resource-poor farmers can afford low-cost drip irrigation kits, whereas conventional irrigation, which costs more than $4,000 per hectare, is well beyond their means.

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Source: http://news.bbc.co.uk/1/hi/sci/tech/7881382.stm