Image-doctoring is nothing new: Joseph Stalin ordered his enemies airbrushed out of official photos and Cuba altered images of Fidel Castro to remove his hearing aid. But national security experts are worried about a new frontier in manipulated content: deep fakes. Deceptively realistic, deep fakes are AI-generated videos that use techniques like faceswaps, lip synchs, and even "digital puppeteers" to show people saying things they never said or doing things they never did. We'll talk about how to spot deep fakes and the potential threats they pose to democratic institutions.
Chances are a dentist has told you to floss more. But studies from the Cochrane Institute and the American Dental Association have found that many common oral health recommendations such as biannual cleanings, yearly x-rays and flossing have not been verified through scientific research. Forum discusses efforts to steer dentistry toward more evidence-based practices and we'll talk about challenges facing the field, including charges that many dentists overtreat their patients.