Ned Kahn (2007 Press Democrat file photo)

Sebastopol artist Ned Kahn is known for his bold artwork, including “Digitized Field,” his shimmering installation on the side of the AT&T building in downtown Santa Rosa.

You can see him in person when he speaks at 7 p.m. Wednesday, July 28, at the di Rosa art and nature preserve in Napa.

His appearance is part of a lecture series presented by KQED -TV and di Rosa, enlisting artists from the di Rosa collection who have also been featured on KQED’s  art series, “Spark.”

The lectures are free for educators and di Rosa docents, and cost $5 for di Rosa members or $10 for general public. RSVP to or call (707) 226-5991, ext. 27.

Kahn won a MacArthur Foundation “genius grant”  fellowship in 2003,  and the National Design Award for environmental design in 2005.

In November 2003,  Kahn created “Wind House,” a site-specific sculpture for di Rosa.  It consists of four walls composed of thousands of small, anodized aluminum panels hinged to move freely in the wind.

More of Kahn’s weather-related works, such as “Cloud Rings,” are on display in the Gatehouse Gallery at the di Rosa. Gallery hours are 9:30 a.m.-3 p.m. Wednesday through Friday.

The di Rosa preserve is at 5200 Carneros Highway 121, Napa.  Information: (707) 226-5591,