--> http://www.bbc.co.uk/radio4/reith2001/
"Dramatic increases in life expectancy are shaking the structure of societies around the world and profoundly altering our perceptions of life and death."
If you are not much of a reader, this is probably the best free connected introduction into the biology of aging that you can get on audio.
Note that Kirkwood is a very respected gerontologist but by no means an immortalist.