What can't be emphasised too strongly here is that these are analyses of real deaths and actual weather. They are not simulations or models - and it reflects the great strength of the INDEPTH Network that it is possible to analyse factual information in this way from parts of the world where reliable data are usually in short supply.
Thomas Malthus famously argued that the human population was doomed to collapse because, as it continued to grow, food production would not be able to keep up, preventing the population's previously inexorable rise. When Malthus was writing, at the end of the 18th century, the world's population was around 1 billion. It is now roughly 7 billion.
DEFRA, the UK's environment ministry, was taken to the High Court by international environmental law firm ClientEarth over its failure to meet legal limits on air quality in 17 regions and cities across Britain. Whilst David Cameron would never be confused with Dan Quayle in terms of his environmental knowledge, it is time for him to match his awareness of the issues with the leadership we need to tackle this public health crisis. After all, don't we all have the right to take a stroll down our local high street in the knowledge it won't take years off our lives?