Steve Connor: Purple tomatoes sow seeds of doubt (Independent) Few subjects are able to generate as much heated controversy as GM food. Attempts about 10 years ago to get the British public to accept the idea of food that had been genetically modified failed miserably, largely because of the furore over "mad cow" disease and the fact that the GM food on offer seemed to be of no benefit to anyone but the multinational agro-chemical business. [News Source]