once iis drill and producucon, it c still be invisibly lluted. as muc as s of the methane and out of theeak well.. most shale basins are even flat anmaintain a fairly regular deep layer with you a hard rock contractions that would allow water to move upward. dog did from the university of the free state supported natural gas extraction until he embarked on instead of the geology of the desert. he fears that political pathways made by lava flows will allllow fracking fluluids and other ways to rise anand pollute t the watr table. and that goese lovove - goes set went to iraq, to the rock. our problem is 10 times, 100 times bigger.. you don't find these in the u.s.. >> the product is undnder such presessure thahat is alwayss log for these e preferrered slow pa. itit is believed in i it will fd his way up the g gas wells. >>>> whahat will happepen a aft- 100 years after the abandonment of the well. >> the latest signs from the gas fields of america seems to support his conclusion. according too the study, and another from cornell university, wells a

the soil has been replisished, and ere's s a w producucon model.l.fenced-in paddocks, rotationalal grazing, anand, t importanantly, a new s sourcef water and a specl cattle feed. owowner cÉlslso belÁqwput hiss faith in micol, the environmental conservationist, as many here view him. the experiment paid off. now the ranch can sustain 3500 head of cattle, a larger herd on much less land. and they're ready for slaughter after just two years. laurent: this is how the cattle management works. when the grass has reached a height of about one meter or 80 centimeters, we let the cattle into the paddock. they eat the best part of the grass, thehe leafy part at the top. after two or three daysys,e close that paddock and open the gate to the next one, where the grass has reached the optimal height. reporter: in the meantime, the other pasturure areas can recov. this system is easier on the soil. the farmers also grow a different type of grass than is usual for the region. mombasa grass is rich in protein, but requires the grazing cattle to be rotated regularly.