In his 1998 autobiography, Mullis expressed disagreement with the scientific evidence supporting climate change and ozone depletion and asserted his belief in astrology.[41][42] He claimed that climate change and HIV/AIDS theories were promulgated as a form of racketeering by environmentalists, government agencies, and scientists attempting to preserve their careers and earn money.[22] Mullis said science was being harmed by “the never-ending quest for more grants and staying with established dogmas”, and that “science is being practiced by people who are dependent on being paid for what they are going to find out,” not for what they actually produce.