Scientists have created a mystery material that seems to conduct electricity without any resistance at temperatures of up to about 15 °C. Still, physicists hope it could pave the way for the development of zero-resistance materials that can function at lower pressures. Common superconductors work at atmospheric pressures, but only if they are kept very cold. Superconductors that work at room temperature could have a big technological impact, for example in electronics that run faster without overheating. “That’s what makes these types of measurements really challenging.”High-pressure superconductors made of hydrogen and one other element are well understood.