Early signs of Alzheimer's disease may be hidden in the way a person speaks, but it's not yet clear which details of our diction are most critical for diagnosis.

It's happening: we're finally getting a treasure trove of shiny new images of comet 3I/ATLAS, the third ultra-rare known object to enter the Solar System from interstellar space.

Amidst surging respiratory illnesses and previously controlled diseases like tuberculosis making alarming comebacks, a new CDC report provides further evidence bird flu is spreading undetected to humans.