One of the most expensive parts of a fuel cell is the metal catalyst, which is often platinum. So it's good news for those who want cheaper fuel cell vehicles that researchers at the National Renewable Energy Labs in Colorado have wired a hydrogenase enzyme to connect electrically with a carbon nanotube. We think? By combining the super tiny strands of carbon with hydrogenese a "biohybrid" catalyst is created, eliminating the need for platinum and other metal bits. Yeah science! [Physorg]