First, the cover story "A Robot in Every Home" in which Microsoft co-founder Bill Gates predicts that intelligent mobile devices will soon be everywhere. Next, we'll delve into "What is a Planet?", discussing the controversial new official definition which banished Pluto. We'll also hear about the "Evolution of Cancer"...followed by "Better Ways to Target Pain". Finally, we'll explore what it will take for ethanol to pay off as an alternative to gasoline.
©2007 Scientific American