• Our “In brief” item on Golgi bodies (23 August, p 22) referred to the “gut bacterium Giardi intestinalis”. In fact, it is spelled Giardia and the parasite is a single-celled eukaryote, not a bacterium.
• In our feature “Written in the stars” (28 June, p 36) we incorrectly stated that the spectrum of star HE 0107-5240 was measured using the Anglo-Australian Telescope at Siding Springs, New South Wales. It was actually studied with the smaller 2.3-metre telescope.
• In “Global warming: the new battle” (13 September, p 6), we wrongly referred to Ilan Kelman as a researcher on the study led by Edmund Penning-Rowsell. Kelman is in fact part of a separate team, although his own flood work, downloadable from , supports the approach and results mentioned by Penning-Rowsell.
