This week's edition comes from a lightning simulator laboratory at the University of Manchester. Using a two million volt generator, scientists show how a lightning bolt can travel more easily through a brick wall than thin air. The aim of the research is to improve lightning protection systems.
Also, a new treatment for fretful dogs that can't stand being separated from their owners.
Presented by Philippa Forrester and Craig Doyle, with reports from Peter Snow, Jez Nelson and Anya Sitaram.
Producer Paul Bradshaw : Editor Saul Nasse
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