The Search for Extraterrestrial Intelligence has always looked for an
anomaly in the persistent cosmic background chatter — a change perhaps in the intensity of a signal that can be taken as a sign that a transmission might be a message to us earthlings from other intelligent beings.Each year, medical researchers who gather at the Alzheimer's Association International Conference search for something
similar as they weigh reports of the complex biology of the human
brain for some sign that a drug might actually change the relentless course of the disease.