IBM Think: Explore Innovation From the Dark Ages to the Present [App Of The Day]

By Leslie Horn, GizmodoJuly 30, 2012 at 06:00PM

Did you know the first metal detector was invented by Alexander Graham Bell in 1881 in order to extract a stray bullet from President James Garfield’s back? This is the kind of interesting innovation revealed in IBM Think, a free app that maps out the roots of technological advances. More »