Genomic science is being applied to a wide range of organisms, from "super foods" created for maximum nutrition to clones of family pets. This section explores the types of genetic modification and cloning taking place now, as well as possible applications in the future—such as cloning humans and cloning organisms that are endangered. People have shaped the characteristics of plants and animals for thousands of years through selective breeding. But today we can make changes directly to the genetic code and modify organisms more radically and more quickly than ever before. Yet society is divided about genetic modification. The 1996 birth of a cloned sheep named Dolly thrust cloning into the spotlight. Since then, further achievements in animal cloning—sheep, cows, mice, pigs and goats—have spurred debates as to how this technology should be applied. Every living thing, from the smallest slime mold to the largest whale, is defined by DNA, the code of life. Understanding the DNA of other species helps scientists uncover more about evolution and ourselves.