Health & Medicine AI Prosthetic Arms Feel Most Natural at One Second Per Reach, VR Study Finds A VR study found AI prosthetic arms feel most natural at human speed — one second per reach. Faster feels creepy, slower feels frustrating.
Daily Digest Featured The Olympics just banned 'forever chemicals' — and athletes are getting disqualified Three athletes DQ'd for PFAS ski wax at Milan-Cortina. Plus: a free tool for Crohn's disease, China's coal decline, first Zika drug candidate, and brain cell rejuvenation.
