• Ötzi the iceman had trouble with lactose digestion (3 March, p 10): lactose is milk sugar, not a protein.
• In our story on treating late-stage Alzheimer’s (10 March, p 5), we should have said Clive Ballard is director of research at the Alzheimer’s Society.
• The Nuclear Advanced Manufacturing Research Centre has asked us to point out that work on developing materials for a new generation of nuclear power stations by Mike Burke and Tim Abram (10 March, p 44) is the responsibility of the Dalton Nuclear Institute at the University of Manchester, UK. Also, Tim Abram is not a member of the Nuclear AMRC.
• Our story on a drug that targets a bacterial communication enzyme should have said it was as effective against the 26th generation of bacteria as against the first (10 March, p 14).
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