So, if this was something that you worried about you would want to know whether such inequality was increasing, decreasing and if either, what is the driving force.

FORBES: CAFOD: Really Not Understanding Global Inequality

But as the UK has got safer and healthier, the force-of-mortality has been decreasing for decades, so that life expectancy has been rising at about three months a year - it's odd to think we have been essentially ageing only nine months for each year that passes.

BBC: Will I live longer than my cat?