Information is the key to life. We want to know what to eat, how to protect our environment, what risks to avoid and what to do if illness strikes. But when it comes to acquiring information, it is the best of times and the worst of times. It is the age of wisdom, it is the age of foolishness. Newspapers, television, radio and of course the Internet bombard us with information at an unprecedented rate, but when it comes to scientific issues the quality of the information is variable.