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Homeland Security said Tuesday that it launched what it described as the largest immigration enforcement operation ever carried out, tied to allegations of fraud involving Somali residents in Minnesota.

Young, infected Lasius neglectus ants will send out an altruistic "kill me" signal to worker ants, a new study finds, as part of a strategy to keep deadly pathogens from spreading through the colony.

The Inspired Home Show in Chicago draws housewares industry insiders from all over the country to network and show off their latest gadgets. This year, they're making plans to cope with tariffs.

Boeing's CEO admits the company "made serious missteps" that hurt the safety of its planes. But denies the company pressures workers to speed up airplane production.

Far-Flung Postcards is a weekly series in which NPR's international team shares moments from their lives and work around the world.