9/11 hero’s legacy lives on 25 years later as son unveils new tech lifeline for those facing grief

A father's legacy is living on through a new artificial intelligence (AI) tool that helps others navigate grief and trauma — two-and-a-half decades after the Sept. 11, 2001, terrorist attacks.

Launched on the 25th anniversary of the horrific attacks on U.S. soil, Doora is a new AI grief companion from Hold the Door, a nonprofit founded in memory of Ronald Fazio Sr., who was killed after helping his coworkers evacuate the South Tower of the World Trade Center.

"We designed Doora to...