Penn’s own environmental force of nature talks about preparing the next generation to save the planet

By JUDY WEST

Home to the oldest geology department in the Western Hemisphere, Penn has a long history in the earth sciences. It wasnt until 1970, though, on the heels of the first Earth Day, that the University launched an undergraduate major in environmental studies. Thirty years later, Bob Giegengack, the earth and environmental science professor who got the program up and running, reflects on how the major, and environmentalism, has evolved.

Q. What are the basic building blocks of the major?
A. The introductory course is an overview of how the world works normally. If youre going to worry about environmental perturbation and intervention its essential to learn as much as you can about how those systems worked before we started mucking them up. And thats hard to do because we didnt start to look at them until they were already mucked up. The second course is a case studies course where we introduce the students to examples of environmental perturbation. We also require they do a concentration in some other discipline. And weve had them all, including everything from physics to folklore, fine arts to religion.

Q. Is travel an important component?
A. It is to us. Its not to every environmental program. A lot of them are strongly policy focused, but to us its important. Everyone in the department is a field scientist of one kind or another.

Q. How do the students respond to fieldwork?
A. Not all of them like it. Its not the shock of a different geological environmentthe kids who are attracted to geology are a pretty outdoorsy lot to start with, so the rigors of living in the field are rarely a challengeits the culture shock thats so dramatic.

Q. Students also get involved locally in lead abatement. Tell me about that.
A: We teach the Penn kids about lead and we send them into the schools to teach the school kids about lead. We deputize the schoolchildren to go into their homes and neighborhoods and collect samples of paint off the wall and dirt from the curb. They bring them back and we analyze them here for lead. Then the Penn kids send the numbers back to school and the kids plot out the neighborhood lead values and draft detailed brochures helping families protect young children. I love to take a suburban kid and put them into Shaw Middle School. Theyre appalled by the chaos in the classroom. After a couple of visits they realize theyre just great kids.

Q. How have the big issues of environmentalism changed over the last 30 years?
A. The issues are basically the same, though there wasnt the general hysteria about global warming that prevails today. In 1970 we were still in a period of global cooling. People were aware that the release of industrial gases into the atmosphere would lead ultimately to warming but it wasnt actually taking place so it was hard to make a case for that. Air and water quality were big issues, and of course they still are, but there wasnt the focus on loss of habitat and loss of biodiversity.

Q. What environmental issues should we be most concerned about?
A. Were five percent of the worlds population and we use 25 percent of its energy. We need a major overhaul of the way we use energy. Americans use twice as much as the British, and life is OK in England. Theres a strong case to be made that any individuals impact on the environment is in direct proportion to his or her energy use, so were hurting the environment more per capita than almost anyone else. Canadians are doing it a little bit more, but it is cold up there. And a few other countries in the Persian Gulf have higher per capita expenditures but thats because theyre using a lot of energy to make energy for the rest of us.

Q. Is it as bad as we think?
A. When I talk about global warming I try to put it in the context of where the climates been for the last million years. And actually the present is extraordinary in the fact that its so cold. Earth scientists have a long-term perspective, and thats an important message to give our students. Our government cant embrace that perspective because it wont get them elected.

Q. What do you say to people who drive Hummers?
A. If you go through the calculations I think you can show that the fuel use of a vehicle is a small amount of its total energy consumptionthe energy cost of making it and delivering it is very substantial. I think we should look not so much at mileage but at life expectancy. So if I had to make a decision about the least destructive car, Id probably pick a small, cheap, durable Toyota.