Most people believe that humanity's survival is threatened by catastrophic overpopulation. Nothing could be further from the truth. In fact, the greatest threat to modern society-in North America, Japan, and Europe-is a global decline in birth rates combined with a massive tidal wave of retirees that will overwhelm our economies and social welfare systems. If nothing is done to stem this "gray tsunami," it could end civilization as we know it. However, bioscience is on the verge of providing a solution: groundbreaking life-extension research could help us be productive and self-sufficient for much longer... and live healthily to 100 years and beyond. Alzheimer's, cancer, heart disease, diabetes, liver fibrosis, arthritis, even wrinkles, may soon be problems of the past. We might even be able to reverse aging itself.