Instead of just two dimensions we can now print in three. A new way of manufacturing is being used to make everything from toy tractors to electric cars. Now, researchers are using 3D printing to ... more 
Instead of just two dimensions we can now print in three. A new way of manufacturing is being used to make everything from toy tractors to electric cars. Now, researchers are using 3D printing to engineer human tissue. Serena Altschul reports. less 
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Sun, Apr 28, 2013 2:29 PM EDT