This research develops a membrane-based wastewater treatment system that selectively supports nitrogen-removing bacteria without energy-intensive aeration or added organic matter. By enabling efficient biological nitrogen removal, the approach reduces greenhouse gas emissions, lowers costs, and makes advanced wastewater treatment more accessible—protecting aquatic ecosystems and water quality.

A hidden evolutionary arms race unfolds between bacteria and the viruses that attack them. By understanding how bacteria cut and rearrange DNA through recombination, researchers can harness these mechanisms for precise gene editing. This work could enable powerful new treatments for genetic diseases, helping patients like the first personalised-therapy recipient, KJ.