Last winter, MIT researchers discovered that a phenol-formaldehyde polymer transformed into a glassy carbon material in a process similar to baking reaches its best combination of high strength and low density at 1,000 degrees Celsius (1,832 degrees Fahrenheit). Now they have determined that, they can achieve a similar glassy transformation, but at a more industrially-accessible temperature of 800 C by adding a small fraction of carbon nanotubes to this material.