• An editing error had us blaming aviation fuel for noxious air in planes (23 June, p 5). In fact organophosphate additives to engine lubricants are widely suspected.
• We said that “Canada is finalising a C$1.9 billion ($1.7 million) class-action settlement” of Native Canadian claims (5 May, p 11). The US dollar figure should of course have been $1.7 billion.
• In the article on denial-of-service attacks, we mentioned the Russian website Xakep (9 June, p 30) and should perhaps have noted that the name is pronounced “hacker” if read as being in Cyrillic characters.
