Scientific American, August 2003

In this edition of Scientific American for August 2003, there are five articles. First, from the cover story, new theories about black holes suggest the entire universe may be one big hologram. Second, vapors from the earth may have fueled the Oracle of Delphi's visions. The third article takes another look at how the brain's cerebellum really works. Fourth, new evidence about the digital divide suggests that the gap between the technology have and have-nots does not compute. And, in the final article, biotechnologists are exploring new therapies for cancer and other ailments with the help of a recently discovered natural mechanism for turning off genes.