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Subscribe for new videos every Thursday: https://www.youtube.com/user/everydayquestions0?sub_confirmation=1 Twitter: https://twitter.com/iamrajant In this episode of Everyday Questions we look at the tallest buildings of the world and see what challenges do engineers face when they build this tall? I recently visited the Burj Khalif and the Petronas Towers in Kuala Lumpur and tried to understand how tall structures are built and what are the problems faced? Elevator Problem: https://en.wikipedia.org/wiki/Skyscraper_design_and_construction#The_elevator_conundrum Carbon Fiber: https://en.wikipedia.org/wiki/Carbon_(fiber) Wind Tunnels: https://en.wikipedia.org/wiki/Wind_tunnel Burj Khalifa: https://en.wikipedia.org/wiki/Burj_Khalifa Petronas Towers, Kuala Lumpur: https://en.wikipedia.org/wiki/Petronas_Towers Kingdom Tower: https://en.wikipedia.org/wiki/Kingdom_Tower Tallest Buildings in the world: https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_the_world Burj Khalifa residents to fast longer: http://www.telegraph.co.uk/news/worldnews/middleeast/dubai/8687532/Burj-Khalifa-residents-told-to-fast-longer-for-Ramadan.html Space Fountain: https://en.wikipedia.org/wiki/Space_fountain Space Elevator: https://en.wikipedia.org/wiki/Space_elevator