The UN Panel on Climate Change has said technologies for the capture and storage of CO2 will be a crucial player in keeping climate change tolerable. But how much can CCS really contribute – and at what cost? Anthony King reports
Membranes are great for performing separations. But they’re also messy and require cleaning. It’s foul work, but Nature appears to be remarkably good at it. XiaoZhi Lim reports
Throwing viable, edible food away is a moral and ethical problem that needs urgent attention. Now researchers are turning this food ‘waste’ into valuable food additives, bioplastics – and even energy. Lou Reade reports
Mucosal vaccines could be a game changer, not only protecting against disease but preventing infection before it starts. Katrina Megget reports