In this issue of Scientific American for October 2003, the cover story takes a look at advances in the development of artificial muscles. Their reach may change everything from artificial limbs to aviation. The second article explores what recent warming trends at the Arctic circle may mean to the rest of the planet. Then, a new therapy called virotherapy might stop cancer. And, finally, the economics of child labor and how the law and free markets can work together to curb it.
©2003 Scientific American