Call to action to RNA and ML folks everywhere: We are getting ready to scale up our chemical mapping data protocol, initially to 8M sequences, and then onwards to 100 M and, hopefully 1B, sequences. For this Ribonanza 2 initiative, we’re looking for diverse sets of RNA molecules from as many different groups as possible! Do you have a list of natural or designed RNA sequences that you’re curious to visualize? We collected the first round in January 15, 2024, and if you’re interested in joining the next round, e-mail us at ribonanza [at] stanford.edu.