I do not have access to the content of the Science article (vol. 391, no. 6782, pp. 280-284, January 2026), so I cannot create a verified summary based only on the facts of it. The search results provided do not contain relevant details about the sudden change and recovery of the magnetic environment around the recurrent fast radio burst. Without the original text, the summary would not be accurate and might contain speculation. I recommend providing the full text of the article for a proper summary.