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Cibelli, Jose B.; Lanza, Robert P.; West, Michael D.; Ezzell, Carol – Scientific American, 2002
Describes a process known as parthenogenesis which produces cloned, early-stage embryos and human embryos generated only from eggs. Speculates that this technology puts therapeutic cloning within reach. (DDR)
Descriptors: Biology, Futures (of Society), Genetic Engineering, Higher Education
Kellermann, Kenneth I.; Thompson, A. Richard – Scientific American, 1988
Describes the very-long-baseline array (VLBA) system of radio telescopes that will be completed in the early 1990s. Explains how the VLBA system works and the advantages over present technology. Compares associated international telescopes and very-long-baseline interferometers (VLBI). Illustrates applications for the VLBA and VLBI. (CW)
Descriptors: Astronomy, Earth Science, Research and Development, Satellites (Aerospace)
Mohnen, Volker A. – Scientific American, 1988
Discusses effects of acid rain on the atmosphere's self-cleansing nature, water pollution, and decline of forests. Suggests clean-coal technology as one of the solutions to this problem. (YP)
Descriptors: College Science, Conservation (Environment), Ecology, Energy Education
Schneider, Stephen H. – Scientific American, 1989
Discusses the global change of climate. Presents the trend of climate change with graphs. Describes mathematical climate models including expressions for the interacting components of the ocean-atmosphere system and equations representing the basic physical laws governing their behavior. Provides three possible responses on the change. (YP)
Descriptors: Climate, Climate Control, Environmental Influences, Higher Education
