Head of Bear, a rare Leonardo da Vinci drawing in private hands, will be offered at Christie’s London in July, with an estimate of between £8 million (US$11.1 million) and £12 million. The drawing, ...

That child’s drawing of a house, tree, or person may represent more than an element of the refrigerator-as-art-gallery. It may predict a child’s intelligence later in life. A child’s intelligence at ...