Relatively scientific analysis of anti-aging science - Most people who write about anti-aging and longevity pills are a bunch of kooks. The authors of this book, Ray Kurzweil and Terry Grossman are not quite kooks:

<a href="http://en.wikipedia.org/wiki/Ray_Kurzweil&quot; target="_blank">http://en.wikipedia.org/wiki/Ray_Kurzweil&lt;/a&gt;
<a href="http://en.wikipedia.org/wiki/Terry_Grossman&quot; target="_blank">http://en.wikipedia.org/wiki/Terry_Grossman&lt;/a&gt;

But they are definitely out there. They believe the confluence of nanotechnology, biotechnology, and computing, coupled with a greater understand of oxidative damage, disease and gene expression will begin to increase human life expectancy by greater than one year per year within the next 40 years.

While their rationale being able to achieve such a feat as increasing human life expectancy by greater than one year per year is not completely baseless, their claim of humanity being able to do so within 40 years comes across as arbitrary. I personally believe this may well happen, but it could just as easily take 400 years as 40.

Regardless, if you are interested in the science of life-extension this is one of the more credible books for general consumption. I enjoyed it well enough.