Most able-bodied folks probably don't spend a lot of time thinking about how people with disabilities navigate the world, particularly in developing countries. However, Amos Winter did, and still does. Winter, a recent PhD graduate from the MIT department of Mechanical Engineering, went to Tanzania as part of his work in 2005. He wanted to understand how people who needed wheelchairs got around and how well current wheelchair technology met peoples' mobility needs. Winter's work was part of an internship with Whirlwind Wheelchair International, a group that designs wheelchairs in developing countries. He learned that people in wheelchairs often just didn't get where they needed to go.
In fact, according to the Wheelchair Foundation, it is estimated that the number of people who need wheelchairs will increase by 22 percent over the next 10 years, with the greatest need existing in developing countries. And USAID estimates that 20 million people in the developing world need a wheelchair.
