NOT MANY ALTERNATIVES IN OIL RUNS OUT (8-2003) In a previous column, I wrote about a theory first postulated by Dr. Richard Duncan in 1989 that says industrialized civilization will end on or before the year 2030. The reason for the gloomy prediction is because the earth’s supply of oil and natural gas will be all but used up by then. And since fossil fuels are used to generate most of our electricity, blackouts like the one that hit the Northeast will become commonplace, even permanent. I also noted that if we are to avoid this apocalyptic scenario, we must find new sources of electricity- generating fuel and find it pretty soon. The permanent blackouts are scheduled to begin, according to Duncan, sometime between 2007 and 2012. But what are the alternatives to oil and natural gas? The most abundant fossil fuel that we can use to generate electricity is coal. But all the “clean” coal has been virtually used up. The only coal remaining contains substantial amounts of sulfur, which pollutes the air. Scrubbing the exhaust from coal-burning power generation plants is extremely expensive. We might be able to stretch the oil reserves a little if cars and trucks could use something else. Fuel cells that use hydrogen have gotten a lot of attention lately. Hydrogen is the most abundant element in the universe. It produces a substantial amount of heat when burned and the exhaust is nothing but clean water vapor. It sounds like the perfect fuel, except for one thing. Almost all the hydrogen on Earth is tied up in water molecules. And it takes more energy to release the hydrogen from water than you get back by burning it. During the 1970’s oil crisis, some strides were made in developing alternative methods of generating electricity. These methods included using giant windmills connected to turbines, tapping into geothermal energy, and building photovoltaic cells that convert light energy into electricity. Although all of these methods will work to produce electricity, they are not efficient enough or cost- effective enough to use on a mass scale. At best, they might help to put off the inevitable a few more years. Then there is nuclear power. It can generate all the electricity we will need, but it’s expensive and dangerous. And nobody wants a nuclear reactor in his own back yard. Three Mile Island and Chernobyl demonstrated that nuclear power plants, when they fail, can have catastrophic consequences. And then there is the question of what to do with all that radioactive waste. So where does that leave us? Unfortunately, it means humanity will face some very serious energy questions in the coming few years. If it is a given that we will run out of an ample supply of oil and natural gas, then we will be stuck with using one of the more expensive or less desirable alternative fuels to generate our electricity. The only other options would be either to give up and start burning candles (and give up all our other electrical and electronic conveniences), or develop a brand new source of energy. One possibility might be to develop a method of harnessing the energy from nuclear fusion. Unlike fission reactions, which are utilized in traditional nuclear power plants, nuclear fusion generates a far greater amount of energy and produces safer and more easily disposable waste products. Unfortunately, cost-effective fusion reactors are years, if not decades, away. Research into usable fusion reactors should be accelerated. In the absence of any new energy technology, we are stuck with having to use nuclear fission to generate the bulk of our electric power. It’s not a very attractive alternative, but unless vast improvements are made in photovoltaic cell technology or one of the other electric-generating technologies already mentioned, we’ll just have to get used to the idea that nuclear power may be humanity’s only chance to avoid reliving the Dark Ages.