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Each of these compounds is slightly different, and scientists are just beginning to figure out how they all work together (see diagram). What is clear is that all of them are important nodes along an elaborate network of interconnecting pathways that feed into, and out of, the hypothalamus, a brain structure that is the control center for weight regulation. The body produces hormones that activate the hypothalamus. The neurons in the hypothalamus send new messages back to the body. And just like subliminal messages spliced into a filmstrip, these signals powerfully affect our behavior even when we are not aware...
They do, however, in restaurants. Soft drinks are now delivered in one-liter cups, observes Judith Stern, vice president of the American Obesity Association. Even the venerable Joy of Cooking has capitulated to the trend; recipes that used to provide meals for six now feed only four. So cheap are carbohydrates and fats that supersizing costs the food industry next to nothing...
Shiva has by no means proved that organic agriculture alone can feed a burgeoning world population. But Navdanya has shown that in some areas, organic farmers with a knowledge of local conditions and traditional methods can achieve high yields at little cost to the environment. In India at least, Navdanya sets an eco-friendly standard that agribusiness must show it can outperform. The challenge for genetic engineers is to create seeds adapted to particular locales that enable farmers to reduce, not increase, the use of chemicals...
...acres of forest in southeastern Guyana for a $20,000 up-front fee and annual payments of 15[cents] an acre. Even where loggers cannot be bought out, the damage they do can be reduced. In the Congo the Wildlife Conservation Society has persuaded the German firm CIB to feed its workers beef and chicken instead of wild bush meat from its logging concessions next to Nouable-Ndoki National Park...
...environment than a cheap, simple way for farmers to double or triple their output while using fewer pesticides on less land? According to Rockefeller University environmental scientist Jesse Ausubel, if the world's average farmer achieved the yield of the average American maize grower, the planet could feed 10 billion people on just half the crop land in use today. Of course it's possible that some genetically modified foods may carry health risks to humans (although none have so far been proved in foods that have been brought to market), and it's unclear whether agricultural companies will...