I cannot produce a summary of this article because the search results provided do not include the full text of the article "Learning to lead" from the journal Science, Volume 391, Number 6781, January 2026. The search results only contain links to articles with similar titles related to leadership in libraries and research laboratories, not the health or science article you specified. Without access to the full content of the article, I cannot comply with your request for a factual summary based solely on verified information from the text.