Forecasts Twenty-first century 75 Forecasting 29 Twentieth century 18 Economic forecasting 14 Vingt et unième siècle 14 Social prediction 10 Mais ... Economic conditions 8 Civilization 7 History 7 World history 6 Economic history 5 Environmental policy 5 Social aspects 5 Civilization, Modern 4 Food supply 4 Human ecology 4 International economic relations 4 Prévisions 4 Social conditions 4 Technological innovations 4 cambio tecnológico 4 changement technologique 4 futur 4 future 4 futuro 4 technological change 4 Capitalism 3 Congresses 3 Economic aspects 3 menos ...