Why do humans tend to live such a long time? Our closest relatives, the chimpanzees, can last into their mid forties in the wild. Yet somewhere in the last six million years, human lifespans have lengthened dramatically, so that living…
Want to live a long time? Who doesn’t? Quite a number of smart people have staked their hopes for long life on restricting their calorie intake. It’s an idea that rests on a not inconsiderable body of evidence. But some…