• Our chart of broadband access in the 25 European Union nations showed Denmark twice and omitted Finland (11 June, p 25). It should have shown that more than 14 per cent of the populations of both countries have broadband. Also a chart of US online music sales (18 June, p 27) failed to mention that the figures were as a proportion of total music sales in the country.
• Chickens turned up where they had no business to be: in a list of mammals whose genomes are being sequenced (18 June, p 14). Chickens are not mammals.
• In “11 steps to a better brain” (28 May, p 28) we said that triglyceride is a “cholesterol-like substance”. Triglyceride is in fact a general term for a whole class of fat molecules.
