Dr. Roy Spencer is a climatologist and former NASA scientist at the University of Alabama in Huntsville known for his work to debunk global warming alarmism. Spencer often appears on Rush Limbaugh's radio show, and is referred to as "the official climatologist of the EIB Network". He is also a proponent of intelligent design over the theory of evolution. Spencer is an author of multiple books refuting global warming hysteria, including the 2008 bestseller Climate Confusion.