Here is a nice article about the history of 3d-printing and the different 3d-printing methods available today:
The true determination of delta bots: http://hackaday.io/project/2543-debrew
Very comprehensive article on makezine. I find particularly interseting the friction welding.
“Percussionist and composer Dame Evelyn Glennie lost nearly all of her hearing by age 12. Rather than isolating her, it has given her a unique connection to her music.”