• We misnamed two US government bodies referred to by psychedelic researcher Rick Doblin (30 August, p 42): they are the Veterans Administration and the Drug Enforcement Administration, not Association and Agency.
• We should have written that fishing fleets emit more than 130 million tonnes of CO2 into the atmosphere per year (13 September, p 28).
• A table on the nutritional content of potatoes, pasta and rice (2 August, p 32) gave their starch content in milligrams per 100g; that should have been grams per 100g.
