This came out today, with cover art I made for the Szymczak Lab at the University of Michigan. They found that certain ligands in a copper-fluoride complex result in the trapping of the fluoride ion via hydrogen bonds after a change in copper's oxidation state would have otherwise let the fluoride go. When I read the manuscript, the first thing that popped into my head was that the hydrogen bonds were creating a sort of cobweb effect to capture the departing F-, then quickly disregarded it as silly. Soon after that, my client e-mailed me that he had had an idea about using cobwebs and spiders, but that as he was writing it he began realizing that it sounded silly. So as fate would have it, the spider metaphor persisted.