The science: In the last century, global population quadrupled. There is one way of looking at the wealth of that population and that is to label those who have cash surplus to survival and to spend on goods made elsewhere as the “consumer class”. That class was around 1.8 billion in 2010. Estimates vary but to be 5 billion by 2030 is probably not an exaggeration.
The bad news: This will need very rapidly expanding use of resources, some of which are already limited.
The good news: Technology keeps finding new materials, improving efficiency of use and we are beginning to think about circular technology. (See future issues on this blog.)
Bill Butterworth 4 April 2016
P.S. Try the book, “Reversing global warming for profit”, by Bill Butterworth, published by MX Publishing, available from all good bookshops or on line at Amazon.