• Space flight engineer Cody Farnell is at Colorado State University (22 May, p 24).
• We stated that modified bacteria have been used to make a polymer (29 May, p 6). In fact, the 1,3-propanediol we mention is not itself a polymer, but a chemical building block used in the production of polymers.
• When correcting the details about Japanese interplanetary spacecraft (29 May, p 29), we misspelled the name of the Akatsuki Venus orbiter.
