Cooling is a major energy drain in server room, and one approach to reducing the energy wasted is to use liquid cooling. However, liquid cooling has been complex to install and administer, as it means pumping fluid across the hot components of a system. Green Revolution Cooling (GRC), launched in 2010, promises to make that much simpler, by laying server racks on their backs, in a bath of non-conductive cooling oil. The waste heat form liquid-cooled systems can be easier to ruse, as liquids hold heat in a concentrated form, so GRC also proposes its system can heat surrounding offices. We asked some questions of the company’s founder and CEO Christiaan Best.