Big Wood (2013) Michael collaborated with specialist Evan Shively to engineer and saw in half the 330-year-old tree that is the centerpiece of the Exploratorium's “Living Systems” gallery. This sculpture helps define the gallery “Life Around Us” as well as offering an opportunity for visitors to sit in and contemplate its magnificence. From inside, it is easy to observe the tree’s rings that reveal the environmental conditions throughout its growth.	Bluerain (2009) Michael was commissioned to create this sculpture as a way-finding tool to help students locate the library among the many buildings on the LSE campus in central London. Nestled onto the corner of the library facade are more than 23,000 blue Light Emitting Diodes creating a shimmering cascade of words that appears to flow down the wall. It quickly becomes evident that what one actually is seeing is a live feed of the research, currently being carried out within the library.	Birds of Prey (2004) Michael created this series of nine silhouettes of Hawks, Falcons and other Birds of Prey that yearly migrate over the Bay Area Discovery Museum located in the Marin Headlands. Each life sized silhouette pivots and tilts in response to the strong winds that blow through the area. A nameplate below each bird describes what species it is and descriptions of the feather patterns that bird watchers look for to help identify the birds in flight.
Fabrication of architectural details David created these custom reproductions of historic architectural details being fabricated. These are a few of the twenty scuppers before they were finished and patinated for Standford University.	What Once Was (1997) Michael collaborated with Landscaper Chris Jacobson to create this environmental installation consisting of life sized profiles of native animals that once roamed on the site. These include Tule Elk, Grizzly Bear and Pronghorn Antelope. Constructed of steel, the animals become visible from the sides of the median strips seen primarily from the vantage point of passing cars. California native grasses and oak trees set the scene.	Handrail (2006) David designed and created a new decorative brass handrail for the front alter of the church in the historical style of existing metalwork in consultation with Leslie Bone, Conservator at the De Young Museum, San Francisco.
Sunflowers (1996) Michael's first public commission was a bouquet of oversized sunflowers burst out of the ground at this light rail stop in the downtown business corridor of Dallas. One of three freestanding sculptural clocks commissioned for the Dallas Area Rapid Transit