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How the cables and gears of an elevator work

Ever wonder what really lifts an elevator? This video explores the cables, locks, and clever mechanics that move us every day. This animation has been dubbed in over 20 languages. Sources include: - ...
BBC Sky at Night Magazine on MSN

Space elevators could one day exist, transporting us off-Earth with the push of a button. Here's how they would work

We look at the science behind building an elevator to take us into space ...