Number 128 (Story #1), May 11, 1993 by Phillip F. Schewe and Ben Stein A RECORD HIGH SUPERCONDUCTING TRANSITION TEMPERATURE of 133 K has been observed for a mercury-barium-calcium-copper oxide material developed by scientists at the ETH lab in Zurich, Switzerland. The highest previous transition temperature, 127 K for a thallium compound, was established in 1988. (A. Schilling et al., Nature, 6 May 1993.)