Corrections.

The July/August 2004 issue carried a banner at the top of the front cover that included the line "Hello? Novartis? Do We Look Like Lab Rats?" The editors wrote that to attract attention to an editorial by senior researcher Brian Halweil, and unfortunately we neglected to check it out with the author. Shortly after the issue was in print, we received a note from professor Klaus Leisinger, executive director of the Novartis Foundation for Sustainable Development, who reminded us that Novartis got out of the genetically modified seed business several years ago (see excerpt of his letter above). We regret the mistake.

We were also a bit careless in the previous issue's Matters of Scale, on the hidden cost of embodied energy. An item on that page compared the fuel efficiency of a bicycle rider versus a car driver, and the aim was to look beyond the usual point about bikes being immensely more energy efficient than cars--and to consider how greatly that comparison varies depending on whether the person riding or driving is fueled by bread or by meat. Unfortunately, as reader Kent Coe points out on page 10, we neglected to address the much larger issue of the energy embodied in the vehicles themselves.

--The Editors