If people have been altering plants and animals since the beginning of agriculture more than 10,000 years ago, why all the fuss?
Genetic engineering alters plants and animals in ways that humans have never done before. It transfers genetic material across species, which could never occur in nature. At this point, no one knows for certain what environmental or human health effects this may have. Read more at the main site News reports have featured many stories about the positives and negatives of eating fish. What are the health benefits of eating fish, what are some of the health risks from eating too much of certain types of fish, and who is most at risk? Fish is a good source of protein, low in saturated fats (the kind that contribute to increased heart disease). Fatty types of fish such as tuna and salmon contain high levels of omega-3 fatty acids, which protect against heart attacks by lowering cholesterol levels and preventing unwanted blood clotting. There are new concerns about the risk of eating certain fish that contain high levels of a particular form of mercury, PCBs (polychlorinated biphenyls), diox
