Martha and Alvaro Galvis used to travel from New Hampshire to Boston to watch the marathon every year. Both were hurt in the bombing two years ago.
April 15, 2015 Martha and Alvaro Galvis were wounded in 2013's bombing of the Boston Marathon. One of the hardest things to deal with, they say, is the feeling that something random and scary could happen again.
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Dennis Aabo Sorensen tests a prosthetic arm with sensory feedback in a laboratory in Rome in March 2013.
Patrizia Tocci/Lifehand 2
February 5, 2014 Many scientists have been trying to create neural implants that will let amputees regain a sense of touch and control. One version has let a Danish man feel the texture of things he's touching. But it's an experimental model that's not yet ready for use outside the laboratory.
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