Letter: Editor's reply to "Laser treatment"

Published 30 December 2014

• The laser is housed in a box underneath the train that safely contains the light. Details are available in this online report: bit.ly/LaserThor.

Issue no. 3002 published 3 January 2015

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with New Scientist events and special offers.