Around the world, obesity levels are rising. More people are now overweight than undernour-ished; two thirds of British adults are overweight and one in four of us is classified as obese. In the first of this three-part series, Jacques Peretti traces those responsible for revolutionising our eating habits, to find out how decisions made in America 40 years ago influence the way we eat now. In America, he finds out how high-fructose corn syrup sweetener, championed in the 1970s by Richard Nixon's Agriculture Secretary Earl Butz, found its way into almost all processed food and soft drinks as a cheaper alternative to sugar. Yep, it's all Nixon's fault.