We get old. There’s no mystery to it. You’re born, you grow up, and then you pass on. But why, and how? And is that process somehow reversible? These are the questions Google hopes to answer with its Calico life sciences company, which just announced a new $1.5 billion research and development center in the San Francisco Bay Area. The new facility will focus on putting resources into drug discovery and early drug development for diseases. If there are better, more efficient ways to stop or prevent illnesses, Calico is going to make sure it finds them.