Plus, the rise of shopping sites that don’t sell anything.  Here’s what we’re covering:At Least 21 Dead in Gaza After Building Collapse, Officials Say, by Natan Odenheimer, Adam Rasgon and Abu Bakr BashirFed Raises Rates in First Major Step by Warsh to Contain Inflation, by Colby SmithOpenAI Discloses Six New Incidents of ‘Concerning’ A.I. Behavior, by Emmy MartinFiji Declares a National Emergency as H.I.V. Cases Skyrocket, by Zane IrwinDopamine Sites Sell Nothing, and People Cannot Get Enough, by Ephrat Livni Tune in every weekday morning, and tell us what you think at: theheadlines@nytimes.com. Subscribe today at nytimes.com/podcasts or on Apple Podcasts, Spotify and Amazon Music. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.