Saturday on PBS News Weekend, the Trump administration lays out its vision for the U.S. role in the world, taking “America First” policies global. How artificial intelligence is helping predict preterm births. Plus, the benefits and risks of an icy plunge as wintertime outdoor swimming gains a global following. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy