But the scientists who did this study made it clear that the possible risks associated with this type of modified plant had to be balanced against the alternative of blanket-spraying fields with agrochemicals. The US is showing the way ahead. In a sense, its people are now involved in one giant experiment into the human consumption of GM foods. Two hundred million people have been exposed to these new foods for several years and there is no sign of ill effects. We can be sure that if there are, we will know about it - the US is the most litigious country in the world.
Biotechnology offers huge benefits for humankind, especially in medicine.
The benefits for agriculture could be as great - we are just not sure yet. The research is just beginning and should be given a chance, and that means more small-scale trials. There are less than 200 small experimental trials in the UK - most no bigger than a suburban garden. Most are on the land of research institutes or universities. Only three licences have been granted for farm-scale trials.