These little piggies make omega-3 fatty acids!

From the genes of threadworms come worthy fats in your morning bacon. A little genetic engineering feat pops a wormy strand of DNA into a piggy egg, and poof! bacon that's good for you. This porcine pair produces three times as much omega-3 fatty acids and 23% less omega-6 fatty acids than your average hog.

But, says Michael Roberts, a bovine reproductive biologist at the University of Missouri, "It's going to be a long time before such animals are able to enter the food chain." Meanwhile, scientists hope to study whether the genetic tinkering might enhance the cardiovascular fitness of the pigs.