Lust for life: Breaking the 120-year barrier in human aging

In rich countries, more than 80% of the population today will survive past the age of 70. About 150 years ago, only 20% did. In all this while, though, only one person lived beyond the age of 120. This has led experts to believe that there may be a limit to how long humans can live. » 7/05/13 8:00am 7/05/13 8:00am

"Longevity genes," not healthy lifestyles, are what help you live to…

Do you have a family history of exceptionally long-living relatives? If you do, congratulations. A recent study suggests that you may be packing "longevity genes" that could allow you to eat, drink, and even smoke like the rest of us and still outlive us all, living well into your 80's, 90's, and beyond. » 8/03/11 12:21pm 8/03/11 12:21pm

Can humanity survive a population of over 10 billion people?

By the end of this year, the human population is expected to reach seven billion people, just twelve years after we hit the six billion milestone. But how much more crowded is our planet going to get? Will we keep on expanding indefinitely, or are we approaching the upper limit? The current consensus is that we'll… » 2/20/11 1:20pm 2/20/11 1:20pm

Life Expectancy Going Down in the United States

In some parts of the United States, medicine has not improved the average life expectancy — and in fact, the average lifespan has been going steadily downward since the 1980s. No, immigration is not to blame for these shifting numbers. These are U.S. citizens in hundreds of different counties whose lives are getting… » 4/23/08 3:56pm 4/23/08 3:56pm