BBC: Insect pest control by genetically-modified crops can raise yields and profits from non-GM varieties grown nearby, a study from the US indicates. Researchers looked at maize grown in five US states, where plants are affected by the European corn borer. They found fewer borers – and higher profits – in GM fields, and in neighbouring non-GM fields. Writing in the journal Science, they say this is the first time that a wider impact on profits has been shown. Maize …