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TechCivilians get better GPS
President Clinton directed the Defense Department to stop degrading signals from 24 Global Positioning System satellites, allowing civilians to receive the same location-pinpointing accuracy long available to the U.S. military.
By Janet Raloff -
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In this article, I was surprised to read that chimeras harboring a mutation are not medically useful. Consider the value of cytokine-receptor mutations in humans, with respect to HIV. It’s likely that introducing some genetic mutations can inhibit viruses or bacteria in a host. Freda Wasserstein Robbins New Jersey City University Jersey City, N.J.
By Science News -
PlantsNew gene-altering strategy tested on corn
Scientists have created herbicide-resistant corn with a new kind of genetic engineering that involves subtly altering one of the plant's own genes rather than adding a new gene.