In the June 2 "Technology," Farhad Manjoo misidentified acoustic neuromas as cancer; they're brain tumors that can be dangerous but aren't malignant.

In a May 31 "Technology," Farhad Manjoo stated that the iTunes license agreement is 79 pages. Some of those pages repeat the same text in other languages.

In the May 27 "Science," Carl Zimmer misidentified the publication ACS Chemical Biology as ASC Chemical Biology.

Slate strives to correct all errors of fact. If you've seen an error in our pages, let us know at corrections@slate.com. General comments should be postedin our reader discussion forum "The Fray" or our comments sections at the bottom of each article.

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