Houston Botanic Garden presents "Glass in Flight," featuring gigantic sculptures of butterflies, beetles, dragonflies, and bees, some as tall as 12 feet high. Created by Tucson-based artist Alex Heveri, the traveling art and science exhibit showcases 21 pieces made of steel and colorful hand-cut Dalle de Verre glass that capture the essence of flight and mimic the transparency and iridescence of insect wings in the sunlight.