Word: toxicants
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Although the tests on animals revealed no toxic effects, scientists point to possible complications involving the immune system. In a healthy individual, natural CD4 plays a regular role in fighting disease. It is unclear whether a flood of synthetic CD4 will interfere with that process. Another concern was raised by AIDS Researcher William Haseltine, of the Dana-Farber Cancer Institute, at the Fourth International Conference on AIDS in Stockholm last June. Haseltine suggested that an influx of CD4 could itself trigger an immune response in as many as 10% of those receiving the drug, causing them to develop antibodies against...
...Dugway Proving Ground in Utah killed more than 6,000 sheep. However, fears of an overwhelming Soviet advantage in chemical weapons led Congress to vote three years ago to resume manufacturing. As a safety measure, all new U.S. chemical weapons are made of "binary" compounds that are less toxic by themselves and can be stored and shipped separately. Only when the substances are combined, as in a fired artillery shell or an exploded ^ bomb, do they become deadly...
...succeed in business by using the Giraffe qualities of caring, sharing and risk taking. Maybe it's a bit much to expect a bank employee to be as fearless as Giraffe L.C. Coonse, a high school chemistry teacher in Granite Falls, N.C., who discovered that an incinerator was producing toxic fumes and, over community opposition, shut it down. How many of us could live up to the example of Carrie Barefoot Dickerson of Claremore, Okla., who financed the opposition to a planned nuclear power plant by mortgaging her farm and raffling handmade quilts? None of us, though, should be intimidated...
...five years, at 200 locations around the U.S., the National Oceanic and Atmospheric Administration has been studying mussels, oysters and bottom- dwelling fish, like flounder, that feed on the pollutant-rich sediment. These creatures, like canaries placed in a coal mine to detect toxic gases, serve as reliable indicators of the presence of some 50 contaminants. The news is not good. Coastal areas with dense populations and a long history of industrial discharge show the highest levels of pollution. Among the worst, according to Charles Ehler of NOAA: Boston Harbor, the Hudson River-Raritan estuary on the New Jersey coast...
Some kinds of algae contain toxic chemicals that are deadly to marine life. When carcasses of more than a dozen whales washed up on Cape Cod last fall, their deaths were attributed to paralytic shellfish poisoning that probably passed up the food chain through tainted mackerel consumed by the whales. Carpets of algae can turn square miles of water red, brown or yellow. Some scientists speculate that the account in Exodus 7: 20 of the Nile's indefinitely turning red may refer to a red tide...