After years of predicting it would happen -- and after years of having their suggestions largely ignored by companies, farmers and regulators -- scientists have documented the rapid evolution of corn rootworms that are resistant to Bt corn. Read about how proper procedures were mismanaged and ignoring the scientists is leading to an agricultural problem of real substance.
http://www.wired.co.uk/news/archive/2014-03/18/rootworm-resistance-biotech-corn