From Voz:
At the Life Sciences Center of the National University of Singapore (NUS), a prototype data center is operating that processes information using live human neurons grown in the laboratory.
These cells require constant maintenance: they must be fed, the pH of their medium must be regulated, and they must be supplied with gases—much like the care patients receive in an intensive care unit. The Singapore rack contains 20 CL1s. Each one houses at least 200,000 neurons on a silicon chip with electrodes, according to the report. The cells are derived from blood that has been reprogrammed into stem cells and then into neurons. They exchange electrical signals with a computer, and that activity translates into computation. Every three days, technicians supply them with sugars, micronutrients and buffers. A mixer injects carbon dioxide, oxygen and nitrogen.