Atlanta History Center, 130 West Paces Ferry Road NW, Atlanta, GA 30305. Cost $25. Deborah’s firm is known for its expertise in working with fragile natural environments using indigenous plant communities in harmony with the local ecology—especially wetlands and protected areas in the U.S. and beyond. Key principles in the firm’s approach to sustainability include ease of maintenance, function and performance, safety, and universal accessibility. Register at www.atlantahistorycenter.com/programs.