• Neurological ageing factors : neurobiology of ageing and prevention of dementia 

      Potocnik, Felix C. V.; Janse van Rensburg, Susan; Bouwens, Christianne (Health & Medical Publishing Group, 2005-06)
      By the year 2000 the total human population passed the 6 billion mark. It is estimated to peak at 9 billion around 2070 before declining to 8.4 billion at the end of the century. The decline will largely be due to reduced ...