A receipt intended to authenticate the transfer of an invisible work by the French artist Yves Klein, titled "Zone of immaterial pictorial sensitivity Series n°1, Zone n°02," is displayed at Sotheby ...

(CNN) — In 1958, artist Yves Klein famously opened an exhibition called “The Void,” which saw him place a large cabinet in an otherwise empty room. Thousands of paying visitors turned up at a Paris ...

Throughout history, people have grappled with imagining and defining “invisible” objects — from microscopic organisms to the cosmos and our galaxy. Two new courses, STS 1700F: “Visualizing the ...

A receipt granting ownership of an “invisible work of art” by famed French postwar artist Yves Klein will go under the hammer next month for as much as $550,000, according to Sotheby’s Paris, which ...

A receipt for a piece of "invisible art" was auctioned off in Paris for nearly $1.2 million. They kept the receipt. Thought paying $120,000 for a banana on a wall was extreme? Earlier this week, a ...