Normally, viscoelastic materials, like foam earplugs and mattresses, perform well in moderate temperatures — but they break down when they get too hot and harden when they get too cold. Silicone rubber hardens into glass around 575 degrees F, for instance. The new material deforms under extreme temperatures, but it maintains its strength and quickly recovers its shape. To test its mettle, the researchers let it sit at room temperature, blasted it with a butane torch and froze it with liquid nitrogen. It withstands temperatures from –320 F to 1,832 F, according to the study, which is published today in the journal Science.