![Naked Scientists Special Editions show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/034/511/small/naked-scientists-special-editions.png)
Summary: In this episode of the eLife podcast we discuss doing protein crystallography with electrons, the discovery of a receptor for carbon dioxide, new insights into arthritis, how the brain responds to a missing hand, and the best shape for whiskers.