The graph in the News Feature ‘History as science’ (Nature 488, 24–26; 2012) accidentally swapped the labels for ‘Racially motivated’ and ‘Political’. The corrected graph is online at go.nature.com/p1rqsj.

The Feature ‘Small, furry … and smart’ (Nature 461, 862–864; 2009) said that Solomon Shereshevsky memorized Dante’s Divine Comedy from a single read. In fact, he memorized several stanzas of the poem in Italian (a language unfamiliar to him).