• A clarification: the purple sector in the first of our diet plate illustrations would better be labelled “Added fats” (11 June, p 28).
• A “king tide” is simply a colloquial term for a very high tide (11 June, p 6).
• Katy Gonder of Drexel University in Philadelphia discovered a subspecies of chimpanzee in 1997 (11 June, p 33).
