In another take on learning from Mother Nature, MIT researchers are working on a biological computer. Thomas Knight of MIT is doing pioneering in creating logic circuits using biological building blocks he calls BioBricks. These BioBricks are made using DNA and are capable of performing Boolean operations such as AND, NOT, NOT AND much like logic gates do in electrical circuits. As microprocessors have continued to get small they are pushing the limits of silicon based devices. These BioBricks provide one possible direction for overcoming those limitations.