If you follow the official mit.edu link, you can find that statement in the last paragrah. http://web.mit.edu/newsoffice/2013/simple-scheme-for-self-assembling

If you follow the official mit.edu link, you can find that statement in the last paragrah. http://web.mit.edu/newsoffice/2013/simple-scheme-for-self-assembling-robots-1004.html http://web.mit.edu/newsoffice/2013/simple-scheme-for-self-as...