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The features of baby talk — softer tone, higher pitch, almost unintelligible vocabulary — are global. Researchers made over 1,500 recordings in urban, rural and Indigenous communities.

Brazil's President Lula is firing back at Trump's 50% tariff threat — saying Brazil is ready to match any U.S. import taxes, dollar for dollar.

As the Trump administration's crackdown continues, traffic stops have become increasingly important tools of enforcement. It has led many immigrants to take alternate modes of transportation.

A federal appeals court has canceled plea deals with three men accused of orchestrating the 9/11 attacks, deepening the legal morass surrounding the long-stalled case.

A new CDC report finds that just a third of those diagnosed with hepatitis C have cleared the virus — a decade after a cure was made available.