Meet Mateo, a young artist with autism, who is breaking barriers with his talent. His mom, Valene, founded ART-TISM to support children on the spectrum.

Fifteen pieces by the likes of Ed Ruscha and Julie Mehretu will headline the marquee auctions at Christie’s New York next ...

He paints cityscapes, flowers, sailboats, and more. "I was born with a brush. I’m going to die with my brush," he says.