Factual errors
We check reported errors against the article and its sources. When an important factual claim is wrong, we correct it and add a note explaining the change.
New information
A later announcement or result may need an update or a follow-up story. We label important additions so readers can tell what was known at the time and what changed later.
Dates and small edits
We do not change a publication date to make an old story appear new. Small spelling or formatting fixes may be made without a correction note.
Report an error
Use the contact page and include a link to the story, the detail you think is wrong and any supporting source.