• The University of Réunion is not, as we implied in our story about gas emitted during earthquakes (17 November, p 16), in Saint Denis, metropolitan France, but on the French island of Réunion in the Indian Ocean.
• Poyang Lake, mentioned on our map of the state of the Chinese nation (10 November, p 50), is the largest freshwater lake in China, but not the largest in the world. Similarly, outside China there are larger saltwater lakes than Qinghai Lake.
