At the end of an unpaved road, in a quiet suburb of a sleepy town in northern Israel, horticultural revolutionaries are growing a strain of cannabis they say relieves symptoms of some chronic illnesses but without the psychotic effects that can accompany regular weed.
Behind the fence at Tikkun Olam -- Hebrew for "fixing the world" -- the green-fingered staff say they have created an Israeli first, by breeding a cannabis plant almost free of THC, tetrahydrocannabinol, the substance that gives smokers their high but can also carry a serious downside.