• “The oil maze” and “Tapping into history”, which appeared in the Statoil branded articles in the UK editions of 3 and 10 December 2011, should have referred readers to energyrealities.org and not to a similarly named website.
• Anna Wilkinson, quoted in the tortoise cognition feature (24/31 December 2011, p 44), is now at the University of Lincoln, UK.
