• In our article about the Tevatron accelerator’s search for the Higgs particle, we neglected to mention that the Tevatron does have a chance of disproving 115 gigaelectronvolts as the mass of the Higgs (28 June, p 13). However, the accelerator will almost certainly not be able to disprove the particle’s existence at higher masses, or prove its existence at any mass.
• While a debate in the Norwegian parliament on the Nobel Foundation would undoubtedly be interesting (28 June, p 26), a debate in the Swedish parliament might be more productive, given the foundation’s residence in that country.
