Electromagnetism, the science that deals with the phenomena that result from the relationship between electricity and magnetism. The term is also used to refer to the electromagnetic phenomena themselves.
We're all exposed to tiny levels of radiation, but a blast of it can leave you in agony -- that is, if it doesn't kill you outright. What is it, what causes it and how can we treat it?
About 90 percent of Americans consume some form of caffeine every day: It's our most popular drug by far. What's so special about this stimulant?