From Generating Answers to Building Explanations: Integrating Multi-Round RAG and Causal Modeling for Scientific QA. - Victor Barres; Clifton James McFate; Aditya Kalyanpur; Kailash Karthik Saravanakumar; Lori Moon; Natnael Seifu; Abraham Bautista-Castillo (NAACL (Industry Track), 2025)