Yours for $200m: why Warhol is now worth more than Picasso

Is he really the greatest and most profound artist of his era? Whether it's the humble can of Campbell's Soup or his 1964 silkscreen portrait of Marilyn Monroe, we're all familiar with the pioneer of pop art's work. Here, ahead of the May 2022 auction of Warhol's most widely recognised piece, Jonathan Jones peels back layer after layer of the celebrated artist's public persona to reveal a better and more cryptic version beneath.