Free Republic

Dutch researcher Eva Kaptijn succeeded in discovering -- based on 100,000 finds -- that the Zerqa Valley in Jordan had been successively inhabited and irrigated for more than 13,000 years. But it was not just communities that built irrigation systems: the irrigation systems also built communities... she has been applying an intensive field exploration technique: 15 metres apart, the researchers would walk forward for 50 metres. On the outward leg, they'd pick up all the earthenware and, on the way back, all of the other material. This resulted in more than 100,000 finds, varying from about 13,000 years to just...

Sewage waters a tenth of world's irrigated crops 12:01 18 August 04 NewScientist.com news service A tenth of the world’s irrigated crops - everything from lettuce and tomatoes to mangoes and coconuts - are watered by sewage. And much of that sewage is raw and untreated, gushing direct from sewer pipes into fields at the fringes of the developing world’s great megacities, reveals the first global survey of the hidden practice of waste-water irrigation. And, however much consumers may squirm, farmers like it that way. Because the stinking, lumpy and pathogen-rich sewage is rich in nitrates and phosphates that fertilise...