Media bias in news articles arises from the political polarisation of media outlets, which can reinforce societal stereotypes and beliefs. Reporting on the same event often varies significantly between outlets, reflecting their political leanings through polarised language and focus. Although previous studies have attempted to generate bias-free summaries from multiperspective news articles, they have not effectively addressed the challenge of mitigating inherent media bias. To address this gap, we propose \textbf{NeutraSum}, a novel framework that integrates two neutrality losses to adjust the semantic space of generated summaries, thus minimising media bias. These losses, designed to balance the semantic distances across polarised inputs and ensure alignment with expert-written summaries, guide the generation of neutral and factually rich summaries. To evaluate media bias, we employ the political compass test, which maps political leanings based on economic and social dimensions. Experimental results on the Allsides dataset demonstrate that NeutraSum not only improves summarisation performance but also achieves significant reductions in media bias, offering a promising approach for neutral news summarisation.

This week, Emily Bazelon, John Dickerson, and David Plotz discuss the revival of Arizona's 1864 abortion ban; the end of No Labels; and the past and future of presidential debates. Here are some notes and references from this week's show: Mary Jo Pitzl and Reagan Priest for The Arizona Republic: Arizona House GOP halt Democrats' effort to overturn Civil War era law in chaotic session A.O. Sulzberger Jr. for The New York Times: Reagan Says Ban On Abortion May Not Be Needed Thomas B. Edsall for The New York Times: Has No Labels Become a Stalking Horse for Trump? Michael H. Brown for The Washington Post: Joseph Lieberman, senator and vice-presidential nominee, dies at 82 Here are this week's chatters: David: Hannah Seo for The New York Times: Is It Better to Brush Your Teeth Before Breakfast or After? For this week's Slate Plus bonus segment, David, John, and Emily discuss AI communications with loved ones after they die. See Walter Marsh for The Guardian: Laurie Anderson on making an AI chatbot of Lou Reed: 'I'm totally, 100%, sadly addicted' and Ira Glass for This American Life: The Ghost in the Machine.