Letters from the June 9, 2007, issue of Science News
By Science News
Safe passage
I have to ask you to remove the subtitle “Dangerous Bridge” under the photograph of the exit ramp from the New Jamarat Bridge in Saudi Arabia (“Formula for Panic: Crowd-motion findings may prevent stampedes,” SN: 4/7/07, p. 213). There has never been an accident on that ramp, and the bridge is now being overhauled to make it safer.
Dirk Helbing
Dresden University of Technology
Dresden, Germany
Mars evasion?
I find it interesting that even the scientists studying Mars can’t accept that our local star can have a major impact on climate (“No Escape: There’s global warming on Mars too,” SN: 4/7/07, p. 214). I am still waiting for the global-warming-crisis mongers to explain how carbon dioxide causes global warming.