Not to be confused with our namesake in Monterey California (apologies to the person who travelled there recently to see his friend’s talk on unusual molluscs and saw a metal band instead) The Catalyst Club is based in Brighton and now in its 13th year. This April’s is a regular night with three guest speakers on topics that could be anything from adjustable spanners to BDSM-themed poetry. Truth is, they’re even weirder.