Genetically modified cotton protects surrounding crops from moth

Genetically modified crops have received a frosty welcome in the UK, and more widely in Europe. Those opposed to such crops worry (among other things) that they could affect the flora around them by outcompeting them or by spreading their altered genes in a round of genetic pass-the-parcel. Now, a new study shows that genetically-modified crops does affect surrounding plants - but in a positive way.