Biden’s Cancer Diagnosis, and Why Ukraine is Seeing a Surge of Violence

Plus, one school district’s big A.I. experiment. On Today’s Episode: Biden Is Diagnosed With an Aggressive Form of Prostate Cancer, by Tyler Pager and Gina Kolata As Trump Prepares to Speak With Putin, Here’s Where Ukraine Cease-Fire Talks Stand, by Anton Troianovski, Andrew E. Kramer, Marc Santora and Paul Sonne Russia Beefs Up Bases Near Finland’s Border, by Jeffrey Gettleman, Amelia Nierenberg and Johanna Lemola Key Panel Approves Trump’s Megabill, but Conservatives Hold Out for More Cuts, by Catie Edmondson What to Know About the Tornadoes That Ripped Through the Central U.S., by Rachel Nostrant Suspect in Palm Springs Bombing Died in Blast, Officials Say, by Laurel Rosenhall, Shawn Hubler, Jesus Jiménez and Maggie Miles How Miami Schools Are Leading 100,000 Students Into the A.I. Future, by Natasha Singer Tune in every weekday morning.