Narrator: This is Science Today. You may not have yet heard the slogan "save the dirt," but activism against soil extinction in the United States is gaining momentum. Soil specialist Ron Amundson of the University of California, Berkeley, says that as the number of extinct soil types increases, eco-friendly activists are being reminded that saving endangered species means protecting the soil that sustains them.
Amundson: There is indeed a relationship indeed between endangered plants and endangered soils in the United States. As one might expect, as certain soil types disappear, soil types that because of their properties harbor certain plant types, as those soils disappear, the plants themselves tend to disappear.
Narrator: Amundson encourages setting aside undisturbed areas where unique soils can help rare species to flourish.
Amundson: So I think among professional conservationists, there's a growing sense that it's not just what's growing there, it's the whole environment that's very important in conservation and preservation efforts.
Narrator: For Science Today, I'm Larissa Branin.