In the Feature 'Data on demand' (K. Kleiner, Nature Clim. Change 1, 10–12; 2011), the credit for Fig. 1 should have read: © David Jones, Climate Code Foundation. Also, the baseline temperature in Fig. 1 should have been 0.0 °C. Corrected in the HTML and PDF versions after print, 1 and 11 April 2011, respectively.