Allergy explosion: why our immune systems react to harmless substances Ciara Gartshore Bioethics Practical ethics and prenatal screening Rebecca Bennett Upgrade Success with succession Martin Rowland Speciation and the tube mosquito Robert Spooner Collagen and scurvy: understanding the connection Eliana Lingard Bird adaptations for running Kevin Moffat Tau protein: microtubule supporter or dementia driver? James Quinn Outside the box The future of food? Growing plants without soil Jens Thomas Spotlight Coelacanth: how a lucky catch rewrote biology Adam Hart Our immune system: how it is controlled by stem cells Rachel Oldershaw Prospects Winning friends, influencing politicians: how can biologists influence those in power? Rachel Lambert-Forsyth Images of biology Microgreens on Mars? Liz Sheffield