... combine the online and the of ine. As they become young adults, some of them are inventing new businesses and technologies that create jobs and opportunities. They teach one another as they ... cent of people in the industrialized world, reflecting the sharp ageing of Europe and Japan in particular. In contrast, adolescents account for more than 1 in every 5 inhabitants of sub-Saharan ... obesity in 2007 were found in the four southern European countries of Greece, Italy, Spain and Portugal, together with the mainly Anglophone nations of Canada, the United Kingdom and the United...