In 1970, life expectancy in the U.S. was 70 years old; today it's around 78. In China, over 40 years ago, the life expectancy was around 62, and now it's around 73 years old. Why are we living longer? That's been the trend over the course of human history. But reports in the U.S., for example, say that life expectancy is slowing its climb due to high obesity rates and smoking.
Doctors today can perform cutting-edge treatments to help us live longer, but the breakthroughs of science alone can help us live full and healthy lives. Today's big idea explores the longevity revolution, and eating your way to a better life.