When David Suzuki was born 1936, there were two billion human beings. In his lifetime, our population has tripled. And in that time, virtually all of the modern things that we take for granted, the birth control pill, computers, jet planes, satellites -- you name it, have become a part of our daily lives. When you add all of that together, our numbers, our consumption, our technology, our economy -- we have become something never seen before on this Earth. A species so powerful we are changing the biological and physical features of the planet.