Together with my colleagues at Science for Life Lab, Stockholm, we have submitted a new manuscript with the second iteration of our CRISPR interference library in cyanobacteria. The paper is currently in revision but can already be accessed on BioRxiv.org. It’s filled to brim with new insights about fitness tradeoffs in photosynthetic bacteria, such as fitness cost for the highly expressed photosystem and light harvesting protein machines. Special thanks to Rui Miao who is the shared first author with me.