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Overview: Trump to meet with AI leaders about safety;

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Justin Verlander left the final start of his 21-year career to an unexpected farewell from his 7-year-old daughter, who sprinted to the mound for a hug.

Technology company and chip maker Nvidia has created a new security platform aimed at preventing artificial intelligence agents from going rogue.

Tens of thousands marched through Madrid on Saturday to protest Spain's housing crisis and the eviction of an 87-year-old woman, camping overnight in Madrid's historic Puerta del Sol plaza.

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Authorities are looking into the possibility of a new ransom note related to the disappearance of Nancy Guthrie

WATCH: Justin Verlander’s emotional final start

WATCH: 1-on-1 with Evan Gershkovich: ABC News exclusive

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