There are some trees and plants that were once native to Greater Houston that you just don’t see as much anymore.

Houston's past, present, and future can be marked by many things: cultural transformation, buildings torn down, neighborhoods revitalized, people come and gone.

But we don't tend to think as much about how our natural environment has changed — about the flora and fauna that were native to Houston and the species that have supplanted them.

To discuss how the literal landscape of Houston has changed, we talk with Diana Foss and Kelly Norrid. They're biologists with the Texas Parks and Wildlife Department.