in the u.s., if we had corn plants that neneed less fertilizerer, we can reduce thee cost for amemerican farmers and reduce thehe environmentntal im. >> how far off is the en relt? >> there a varieti being grown daday in rica, as america, that he e bett roooots, beerer yies. at is haenening day. dole and triple thyields thout rtililizer, just by selelectinfor r e better nutries. when we lo at ththe nes with ththe good ro traits fo nitrog and wer acquision, were talkinghree tfour fo increase yieldnder droughgh. in a study pubshed last year, had an eightfold increase. that was eight times more aled without water. instead of putting on more fertrtilizers and wawater, we ae just selecting foror a better seed. by h having a tter root sysyste, we can have muchch better crop. i think k the impactct is goingo contininue. the overall picture is that we are really coming up with -- against biological lits of what we can dodo. you cannot j just assume that we will be able to continue making on moretilizer, putting irrigation s systems. therere are plenty of reresourcs to go around. we can't make pr