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Learn about the different types of identity documents, such as passports, national ID cards, and driver's licenses, and how they are used to prove a person's identity. Explore the history and debate of identity documents, from their origins to their current challenges and controversies.
Maglev is a system of rail transport that uses electromagnets to levitate and propel the trains, achieving higher speeds and lower noise than conventional railways. Learn about the history, technology, economics, and records of maglev trains, such as the 603 km/h Japanese L0 Series and the 431 km/h Shanghai maglev.