Intelligence reports warned of Russian provocations along the routes, Ukrainian officials said. Ukraine and Russia have regularly agreed to establish corridors from some of the hardest-hit cities.

Russia's war in Ukraine has prompted an exodus from Russia, including many Americans living there. Some had built a life stretching over decades. Now they don't know if they'll ever go back.

For COVID patients, ECMO is a last-ditch respiratory treatment in which only about half survive. Yet a new small study suggests many lives would still have been saved if there had been more machines.

Progressive legislatures are passing their own policies aiming to shore up abortion rights at the local level ahead of a Supreme Court decision that could overturn Roe v. Wade.