  Here's an interesting little piece on the welfare / public expenditure implications of massively underestimating the increase in life expectancy over the next century or so - urlLink Health crisis looms as life expectancy soars .
Of course, what this also fails to take into account is that with the massive surge to the right that's been going on in political, erm, thinking (if that's the word I'm looking for) , over the past thirty years and continuing into the forseeable, governments are unlikely to give a flying toss about the welfare of the old and infirm for more than the next twenty or so years, never mind the fate of the newborns of today... 
