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February 22,
1997
Ewe Again? Cloning from Adult DNATurning science fiction into fact, scientists have used DNA from an adult sheep to create a genetically identical copy, or clone, of the animal.
Stewart, C. 1997. An udder way of making lambs. Nature 385(Feb. 27):769.
Wilmut, I., et al. 1997. Viable offspring derived from fetal and adult mammalian cells. Nature 385(Feb. 27):810. Available at http://www.nature.com/.
Adler, T. 1996. Bidding Bye-Bye to the Black Sheep? Science News 149(Mar. 9):148.
Campbell, K., et al. 1996. Sheep cloned by nuclear transfer from a cultured cell line. Nature 380(March 7):64.
Solter, D., 1996. Lambing by nuclear transfer. Nature 380(March 7):24.
For an interview with Ian Wilmut, who headed the cloning effort, go to http://www.salonmagazine.com/feb97/news/news2.html
People with weak defenses against a potent bacterial toxin found in the gut are more likely to suffer problems after surgery.
Bennett-Guerrero, E., et al. 1997. Relationship of preoperative antiendotoxin core antibodies and adverse outcomes following cardiac surgery. Journal of the American Medical Association 277(Feb. 26):646.
The report in 1995 of the first planet detected around a sunlike star may be wrong.
Gray, D.F. 1997. Absence of a planetary signature in the spectra of the star 51 Pegasi. Nature 385(Feb. 27):795.
Walker, G.A.C. 1997. One of our planets is missing. Nature 385(Feb. 27):775.
Cowen, R. 1995. Finding planets around ordinary stars. Science News 148(Oct. 21):260.
______. 1995. Some like it hot. Science News 148(Dec. 16):412.
A rebuttal by the codiscoverers of the planet can be found at http://obswww.unige.ch/Actualites/51Peg/html_51peg_wd/html_51peg_wd.html
A new ocean core sample tells the clearest story yet of how a comet or meteor impact changed life on Earth 65 million years ago.
Alvarez, W. 1997. T. rex and the Crater of Doom. Princeton, N.J.: Princeton University Press.
Glen, W., ed. 1994. The Mass Extinction Debates: How Science Works in a Crisis. Stanford, Calif.: Stanford University Press.
Monastersky, R. 1994. Impact wars. Science News 145(March 5):156.
German mine yields ancient hunting spearsExcavations have uncovered the world's oldest known hunting weapons, a set of three wooden spears that appear to have been hurled at large game animals around 400,000 years ago.
Dennell, R. 1997. The world's oldest spears. Nature 385(Feb. 27):767.
Thieme, H. 1997. Lower Paleolithic hunting spears from Germany. Nature 385(Feb. 27):807.
Bower, B. 1997. Ancient roads to Europe. Science News 151(Jan. 4):12.
In the Caribbean waters off Panama, green algae synchronize their exuberant sex lives.
Clifton, K. 1997. Mass spawning by green algae on coral reefs. Science 275(Feb. 21):1116.
Hay, M. 1997. Synchronous spawning: When timing is everything. Science 275(Feb. 21):1080.
Additional information is available at http://www.ozemail.com.au/~edrew
Men who smoke can pass on genetic damage that predisposes their offspring to cancer.
Ji, B.-T., et al. 1997. Paternal cigarette smoking and the risk of childhood cancer among offspring of nonsmoking mothers. Journal of the National Cancer Institute (Feb. 5).
Adler, T. 1995. Power foods. Science News 147(Apr. 22):248.
Hertog, M.G., P.C. Hollman, and B. van de Putte. 1993. Content of potentially anticarcinogenic flavonoids of tea infusions, wines, and fruit juices. Journal of Agricultural and Food Chemistry 41:1242.
Marino, G. 1994. Vitamin C helps cigarette-smoking hamsters. Science News 146(Aug. 6):86.
Morrow, J.D., B. Frei, . . .L.J. Roberts II. 1995. Increase in circulating products of lipid peroxidation (F2-isoprostanes) in smokers. New England Journal of Medicine 332(May 4):1198.
Raloff, J. 1996. Antioxidants: Confirming a heart-y role. Science News 150(July 6):6.
______. 1996. How antioxidants may fight cancer. Science News 149(March 23):182.
______. 1994. Oxygen's radical role in cancer and aging. Science News 146(Dec. 17):407.
Reilly, M. . . .G.A. FitzGerald. 1996. Modulation of oxidant stress in vivo in chronic cigarette smokers. Circulation 94(July 1):19.
Most vitamin E supplements appear to offer good protection against oxidant damage to the body.
Brown, K.M., P.C. Morrice, and G.G. Duthie. 1997. Erythrocyte vitamin E and plasma ascorbate concentrations in relation to erythrocyte peroxidation in smokers and nonsmokers: Dose response to vitamin E supplementation. American Journal of Epidemiology (February):496.
Duthie, S.J., et al. 1996. Antioxidant supplementation decreases oxidative DNA damage in human lymphocytes. Cancer Research 56(March 15):1291.
Fackelmann, K. 1992. Vitamin E flexes plaque-busting muscle. Science News 141(March 28):198.
______. 1991. Vitamin-rich blood may prevent angina. Science News 139(Jan. 12):23.
Hertog, M.G., et al. 1995. Flavonoid intake and long-term risk of coronary heart disease and cancer in the seven countries study. Archives of Internal Medicine 155:381.
Morrow, J.D., B. Frei, . . .L.J. Roberts II. 1995. Increase in circulating products of lipid peroxidation (F2-isoprostanes) in smokers. New England Journal of Medicine 332(May 4):1198.
Raloff, J. 1996. Antioxidants: Confirming a heart-y role. Science News 150(July 6):6.
______. 1996. How antioxidants may fight cancer. Science News 149(March 23):182.
______. 1995. New support for tea's heart-y benefits. Science News 148(Dec. 9):399.
______. 1993. Add tea to that old 'apple a day' adage. Science News 144(Oct. 30):278.
The Solar Heliospheric Observatory gives scientists information about the composition of the solar wind.
Galvin, A.B. 1997. New SOHO observations: The solar wind in situ. The 163rd meeting of the American Association for the Advancement of Science. Seattle.
Cowen, R. 1997. Solar cloud hits Earth's magnetosphere. Science News 151(Feb. 1):68.
_____. 1996. How to light a fire. Science News 150(Aug. 31):136.
_____. 1996. SOHO views the sun in a new dimension. Science News 149(May 4):277.
A single electromagnetically trapped ion could serve as a bit in quantum computers of the future.
Monroe, C. 1997. Quantum computing with individual atoms. The 163rd meeting of the American Association for the Advancement of Science. Seattle.
Lipkin, R. 1996. Schrodinger's cat: Two atoms in one?Science News 149(May 25):325.
Peterson, I. 1996. Quantum-quick queries. Science News 150(Aug. 31):143.
_____. 1995. Defining quantum computer bits and pieces. Science News 147(May 27):325.
Vergano, D. 1997. Brewing a quantum computer in a coffee cup. 151(Jan. 18):37.
Table of Contents - 3/1/97
