WTF Is Calico, And Why Does Google Think It Can Defy Aging?

It's nice to see some big names focusing on anti-aging research. It seems obvious that anti-aging research is a good idea, but surprisingly few people are actually pursuing it.

This video (http://www.youtube.com/watch?v=Pm-5s__aZE0) has an interesting debate about whether immortality would be a good thing. I'm still uncertain about this; but I think it's fairly straightforward that our healthspans have not yet reached optimal length. Heck, we currently spend the first 20-30% of our lives just getting the ball rolling.