Add Yahoo as a preferred source to see more of our stories on Google. PORTLAND, Ore. (KOIN) — A computer bug is to blame for Tuesday evening’s Hawthorne Bridge closure, according to Multnomah County.

Fifty-four seconds. That’s how long it took Raphael Wimmer to write up an experiment that he did not actually perform, using a new artificial-intelligence tool called Prism, released by OpenAI last ...