Through a lyrical approach to natural science, Levy blends an understanding of sustainable design and ecological concepts and harnesses the ephemeral changes of weather and light with the lasting presence of sculpture.

[24] Spiral Wetland is made with native soft rush, Juncus effusus, growing in a closed-cell foam mat anchored to the lake's floor.

The plants help remove excess nutrients like nitrogen and phosphorus from the lake water, and the mat adds shade for fish habitat.

[25] Three Rivers Arts Festival, Pittsburgh, PA 3,000 painted buoys radiate out from the bulkhead of the Point State Park, like an eyelash for the city.

[27] Schuylkill Center for Environmental Education [Wikidata], Philadelphia, PA. Part of Edible Landscapes, curated by Amy Lipton Kept Out consists of a pair of deer exclosures, the fenced areas to keep deer out: one built near the artist's studio in a woodland in Pennsylvania's Ridge and Valley region and the other at the woodlands edge of Schuylkill Center for Environmental and Education in the Piedmont ecosystem.

Robert Deason, Hydrogeologist and T. Allan Comp Historian Acid mine drainage pollutes hundreds of miles of streams in Pennsylvania.

[19][20] "Lotic Meander" is a serpentine walkway that resembles a dried riverbed, located outside the Ontario Science Centre's Great Hall.

[31][32] Modelled on the meanderings of the Humber River, the snakelike stream is 91.4 metres long and winds along a path that takes up most of the Solar Patio.

[33] The piece is made from 116 granite slabs from India, and 8 nearly perfect hemispherical or hemiellipsoidal black domes carved from boulders imported from China.