Coal is dirty. But coal is driving the U.S., Chinese and Indian economies. And therefore, coal is not going away. Renewable energy sources like solar and wind generate only 1 percent of the world's electricity. Do the math: Making coal burn cleaner might be the most pressing environmental problem that no one talks about.

Despite recent estimates that pollution from China's booming coal industry reaches U.S. shores in as little as five days, the green-tech investment boom that has funded the rise of biofuels has bypassed coal. Even the head of the World Coal Institute recently proclaimed the last 10 years "a lost decade" for clean coal, saying it's time to play catch-up.

Stanford's Jeremy Carl, a research fellow in the Program on Energy and Sustainable Development, couldn't agree more. He spoke on the phone with Wired News to discuss China, the holy grail of clean coal and how many coal plants he'd trade for Kyoto's accomplishments.

Stanford research fellow Jeremy Carl says, "Coal is as dirty as it gets," but warns against throwing the possibly cleaned-up baby out with the dirty bathwater.

Wired News: Why'd you get into clean coal?

Jeremy Carl: I looked at the numbers. It's a question of where the big sources of emissions are and where we can attack them.

WN: Can you give us an idea of the scale of coal power? Can you put coal in context as an energy source?

Carl: Only oil makes a bigger contribution to global energy. In terms of energy in the industrial world, it's about 40 percent of electricity production.

WN: How dirty is coal?

Carl: Coal is as dirty as it gets. Coal has every element in the periodic table. And depending where in the world you get it from, "coal" can mean 100 different substances. If you sent the sort of coal you might use in a typical Indian plant to a supermodern boiler in Japan, it would shut the place down.

WN: But there's got to be good things about coal.

Carl: It's cheap. And coal doesn't have the kind of extreme risk that nuclear power has. You're not going to build a dirty bomb out of coal. And unlike other fossil fuels, it is really widely distributed, so there is less of a coal OPEC.

WN: And that distribution would seem to make resource wars less likely to break out over coal?

Carl: Yes.

WN: Is there an energy source that could replace coal?

Carl: Natural gas is the only viable replacement, and it's not clear that the natural-gas supply could scale up to replace coal.

WN: So, how can we can make coal cleaner?

Carl: The most-well-known is flue-gas desulfurization, which takes sulfur dioxide out of smoke stacks, and came out of concerns about acid rain. There are other pollution-control devices for nitrogen oxide and mercury filters.

WN: What about up-and-coming technologies like carbon capture and sequestration? Can you tell us about that?

Carl: You're taking carbon from a smokestack and pressure-injecting it into a geological formation of some sort. We actually already do this process at an industrial level. We know how this works.

WN: Seems like we're spending a lot of time on the backend scrubbing pollutants out. Should we be designing in a cleaner process on the front end?

Carl: A lot of people point to integrated gasification-combined-cycle (IGCC) plants, which gasify coal before burning it, as the holy grail because they get you a cleaner process. It gives you a more concentrated stream of carbon that you can sequester underground more cheaply. The capital cost is very high, though, and we don't have a lot of experience in designing them.

WN: We hear a lot about China's coal industry. Can you compare it with the U.S. industry, which ranks second in the world?

Carl: We mine about (1.1 billion tons) of coal per year. China was at about 1.4 billion tons seven years ago. Now they are at 2.4 billion tons. So, they essentially took the second-biggest coal industry in the whole world and replicated it in seven years. And if you look at the Chinese plans, they plan to ramp it up even more in the future.

WN: Given the obvious environmental impacts of these plants, why don't we have better answers for these problems than the Kyoto Protocol (which the United States didn't sign, and which exempted China and India from emissions restrictions)?

Carl: I'll give you a speculative, personal answer. It has to do with the politics of the type of people who were negotiating Kyoto. And the pressure put on by environmental groups that were uncomfortable with coal. There was just so much pressure on the symbolic importance of getting a deal done.

WN: What would you have rather seen?

Carl: I think there has been some really good criticism that says, "Was the U.N. really a good forum for this? Or would it have been better to have taken the 10 countries who consume 60 percent of global energy and do something with real teeth in it?" I think that would have been a much better approach.

I would have happily traded every emissions gain from Kyoto for eight clean coal plants sequestering carbon in different countries. Because then we could have a real discussion that says, "This works. Now let's see who has to bear the cost."

WN: Why would that be such a big deal?

Carl: Because right now we're having a conversation with China and India where we're trying to get China and India to build clean coal plants by saying, "Here's this thing that's never been tried before at a mass scale. You should build one." And that's not going to work.

The Institute welcomes five new full-time faculty and two distinguished visitors in the current academic year. The latest additions represent consolidation of ongoing programs, such as those in homeland security and international relations and expansion of its research agenda into Asian comparative healthcare and issues in contemporary Europe.

Below are brief profiles of FSI's new faculty, all of whom have offices in Encina Hall.

Martha Crenshaw--FSI Senior Fellow, CISAC

Formerly a professor of government at Wesleyan University, Martha Crenshaw has a distinguished record of scholarship and policy engagement in the area of terrorism studies. Her early work on the National Liberation Front in Algeria 30 years ago made seminal contributions to the understanding of terrorist psychology and organizational structure, themes that are helping to animate the agenda for future research in the field. Her work with the U.S. Department of State and the intelligence community in the wake of 9/11 has played an important role in a major Department of Homeland Security grant she brought to Stanford this year.

Karen Eggleston--FSI Center Fellow, Shorenstein APARC and CHP/PCOR

Karen Eggleston joined Stanford from Tufts as an Asian comparative healthcare scholar whose work focuses on health systems and design incentives, especially in lower- and middle-income countries. She has co-authored Welfare, Choice and Solidarity in Transition: Reforming the Health Sector in Eastern Europe with esteemed economist János Kornai, which has been translated into Chinese, Vietnamese, Polish, and Hungarian. Her current research examines the Chinese healthcare system and how ownership factors affect hospital performance.

Siegfried S. Hecker--FSI Senior Fellow, Professor (Research), Management Science and Engineering, and Co-director, CISAC

Director emeritus of the Los Alamos National Laboratory, material scientist Sig Hecker became CISAC's co-director in early 2007. His research interests include plutonium science, nuclear weapons policy and international security, nuclear security, including nonproliferation and counter terrorism, and cooperative nuclear threat reduction. Over the past 15 years, he has fostered cooperation with the Russian nuclear laboratories to secure and safeguard the vast stockpile of ex-Soviet fissile materials.

Josef Joffe--FSI Senior Fellow, Forum on Contemporary Europe, and the Marc and Anita Abramowitz Fellow, Hoover Institution

A journalist-scholar and publisher-editor of the German weekly Die Zeit, Joe Joffe is in residence at Stanford during fall quarter. His work focuses on U.S.-Europe relations, and is noteworthy for its ability to bridge the worlds of journalism, academics, and policy analysis. He serves on several editorial boards and is a member of the International Institute for Strategic Studies. His work has been acclaimed through a number of awards, including Germany's Theodor Wolff Prize.

Phillip Lipscy--FSI Center Fellow and Assistant Professor, Political Science

Just completing his PhD in government at Harvard, Phillip Lipscy joins Stanford as a jointly held appointment in political science and FSI. His research focuses on international relations in Asia with particular attention to the domestic sources of foreign policy conduct. He is a comparativist with training in international relations, a rarity in the field of contemporary Japanese politics. He is bicultural, having grown up in Japan, and his foreign policy interests encompass the entire East Asia region.

William Howard Taft IV--The Warren Christopher Visiting Professor of International Law and Diplomacy, FSI and the Stanford Law School

Will Taft will be in residence at FSI and the Law School during the 2007-08 academic year as a visiting scholar and teaching Contemporary Issues in International Law and Diplomacy and Foreign Relations Law. Taft has held several private and public positions, including appointments at the Federal Trade Commission, Office of Management and Budget, and U.S. Department of Health, Education and Welfare. In 1981, he became general counsel to the Department of Defense followed by an appointment as the Deputy Secretary of Defense in 1984. Taft also served as U.S. ambassador to NATO and the U.S. Department of State's legal advisor, the highest legal position in the department. Taft is currently counsel in the office of Fried Frank Harris Shriver & Jacobson.

Alejandro Toledo--FSI Distinguished Payne Lecturer, CDDRL

Having overcome extreme childhood poverty, Alejandro Toledo became the first Peruvian president of indigenous descent to be democratically elected in 500 years. During his presidency, the Peruvian economy registered one of the fastest growing economies in Latin America. The central aim of his presidency was the fight against poverty through health and educational investment. Toledo will be in residence at CDDRL during the 2007-08 academic year. His work will be showcased in a series of talks, workshops, and other activities as part of his Payne lectureship.