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The 2050s is a decade of the Gregorian calendar that will begin on January 1, 2050 and will end on December 31, 2059. == Notable predictions and known events == * World population is predicted to reach 9.3 billion people, according to United Nations Population Division. * French demographist Emmanuel Todd predicts worldwide zero population growth birth rates by 2050. * The United Kingdom could have the largest population in the European Union by 2050 and be the third biggest recipient of migrants in the world, UN projections suggest. *China, United States, India, Brazil and Mexico will be the largest economies in the world, according to a Goldman Sachs study. * Expected completion of a space elevator by 2050. *Predictions have been made for commercial hypersonic air travel by 2050.〔(【引用サイトリンク】title=Hypersonic Zehst jet will fly in 2050 on seaweed biofuel )〕 *Denmark's energy supply is planned to be supplied only by renewable energies in 2050. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「2050s」の詳細全文を読む スポンサード リンク
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