In 1998, astronomers discovered dark energy. The finding, which transformed our conception of the cosmos, came with a little-known consequence: It threw a wrench into the already daunting task of ...
VATICAN CITY — On Christmas Eve, Cardinal Pietro Parolin, second-in-command to the pope and a longtime diplomatic mediator, urgently summoned Brian Burch, the U.S. ambassador to the Holy See, to press ...
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