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Project Mercury was America's attempt to place a man in orbit around the Earth. Jim Lovell was one of the 110 test pilots considered for selection but a temporary liver condition put paid to his chances.，更多细节参见heLLoword翻译官方下载
By the end of the 21st century, only eight of the 21 cities that have hosted the Winter Olympics are projected to be cold enough to reliably host the Games due to climate change. Challenges faced by Milano Cortina 2026 organisers such as producing artificial snow, establishing transport links between remote locations and building new infrastructure are likely to become more omnipresent at future editions.