TONIGHT: Tom Costello with a behind-the scenes look at a TSA checkpoint and talks with the TSA's Federal Security Director about the items they confiscate to keep travelers safe. | NBC Nightly News with Tom Llamas

🧐 Let's go behind the scenes of how new scientific discoveries get checked over before getting into academic journals and then news stories. It's called peer review—a checkpoint where anonymous experts scrutinize a study to: ✔️Spot mistakes ✔️Question assumptions ✔️Push for revisions Peer review isn’t perfect (looking at you, “Reviewer 2”), but it’s how science builds trust—and how evidence-based care reaches patients. By Joshua Winowiecki, Michigan State University | The Conversation US