my name is bill mclaughlin. i have worked here since 1986. 19 years as a gardner and since 2005 as the curator. i oversee our plant content and have to say that native plants are a specialty of mine. i'm happy to show you around. as we enter the regional garden, you are actually walking on a pathway that has two different soils, one on either side. the reason we chose to portray these two different floras and soils is because washington, d.c., lies on the fall line, the fall line is a rough divide between the piedmont, which is to the north and west, it's rocky and hilly, the foothills of the appalachian mountains. and then to the east is the coastal plain with flat soil with material from the rivers down eastward and overlaid with marine deposits over time. it's very loose, sandy and a bit different from the hard soil of the piedmont. some of the coastal plain plants that we show are things like the wax myrtle. if you go north, you will find more and more bayberry, which is its deciduous cousin. both of them ar

mclaughlin, thank you for being with me. harriet rowan, thank you for joining us. >> thank you so much. >> thank you bill, it's been a pleasureat our website billmoyers.com, you'll find further analysis of the election and the money behind it. that's all at billmoyers.com. i'll see you there, and i'll see you here, next time. >> announcer: funding is provided by: anne gumowitz, encouraging the renewal of democracy. carnegie corporation of new york, supporting innovations in education, democratic engagement, and the advancement of international peace and security at carnegie.org. the ford foundation, working with visionaries on the front lines of social change worldwide. the herb alpert foundation, supporting organizations whose mission is to promote compassion and creativity in our society. the john d. and catherine t. macarthur foundation, committed to building a more just, verdant, and peaceful world. more information at macfound.org. park foundation, dedicated to heightening public awareness of critical steves: the dramatic rock of cashel is one of ireland's most evocative sites. this was the seat of ancient irish kings fo