Wikipedia
ARP-SAPC
Alternativa Racional a las Pseudociencias – Sociedad para el Avance del Pensamiento Crítico or ARP-SAPC for short (English: Rational Alternative to Pseudoscience – Society for the Promotion of Critical Thinking) is a Spanish nonprofit organisation that, according to its bylaws, promotes the use of reason and critical thinking or scientific skepticism regarding what they consider credulity, rejecting and refuting claims of allegedly paranormal events.