TBS logo  Tampa Bay Skeptics (Founder 1988; Executive Director and Editor of Tampa Bay Skeptics Report  1988-2013)

CSI logo  Committee for Skeptical Inquiry (CSI -- formerly CSICOP) (publishers of Skeptical Inquirer  magazine)
(UFO Subcommittee member 1980s and '90s, Scientific Consultant 1992-2018) -- Why I resigned in protest

  The Scientific Review of Alternative Medicine (Contributing Editor 1997-2002)

ACSH logo  American Council on Science and Health (Scientific Advisor 1997 to present)

  Faith-healing Investigation Project, Committee for the Scientific Examination of Religion (CSER)
(sponsored by the Council for Secular Humanism and Free Inquiry  magazine) (Member 1986-90)

Mensa logo  Mensa (Member since 1982; Founder and National Coordinator of a "Skeptics" Service 1987-2011) (Read my Mensa "Skeptically Speaking" essays)