From wooden to wondrous: The technology of wheelchairs

As medical science improves so many facets of our lives, the humble but vital wheelchair also advances.

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Stephen Hawking lived with ALS, also known as Lou Gehrig's disease, for more than five decades. Stephen Hawking lived with ALS, also known as Lou Gehrig's disease, for more than five decades. (Photo: Andrew Cowie / AFP/Getty Images)

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Power chairs

From the 1990s until now, technology has taken over the design of wheelchairs, making them into compact vehicles of sorts with every customization imaginable. For example, famed physicist Steven Hawking's wheelchair has a computer connected to it that allows Hawking to control the chair. 

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