Here's why the world’s most expensive painting has gone missing
Many art historians believe the world’s most expensive painting 'Salvator Mundi' isn't actually an original da Vinci painting. Art critic Jerry Saltz tells us why it isn't.
NYC Art Activists Tackle Guns & the Guggenheim: Last Week in Art
A pop-up installation turned a subway tunnel into an anti-gun protest and light projections condemned the Guggenheim's treatment of workers on its Abu Dhabi building.