Available for Selected Articles
News of the Week:
Alcoholism Shows Its Youthful Side
People who began drinking alcohol before age 15 exhibit much greater rates of serious alcohol problems than those who started imbibing at a later age.
Grant, B.F., and D.A. Dawson. 1998. Age at onset of alcohol use and its association with DSM-IV alcohol abuse and dependence: Results from the National Longitudinal Alcohol Epidemiologic Survey. Journal of Substance Abuse 9(January):103.
Bower, B. 1993. Delinquent developments. Science News 143(May 1):282.
Built-in drugs could target tissues
Proteins containing non-natural, pharmaceutically active amino acids could serve as vehicles for delivering the drugs.
Budisa, N., et al. 1998. Residue-specific bioincorporation of non-natural, biologically active amino acids into proteins as possible drug carriers: Structure and stability of the per-thiaproline mutant of annexin V. Proceedings of the National Academy of Sciences 95(January):455.
Smaglik, P. 1997. Swapping insulin syringes for tiny beads. Science News 151(March 29):189.
Wu, C. 1996. Gels can give drugs a timely release. Science News 150(Sept. 7):159.
Tinnitus location found in the brain
Using positron emission tomography, researchers have pinpointed where the brain registers a ringing in the ears.
Lockwood, A.H., et al. 1998. The functional neuroanatomy of tinnitus: Evidence for limbic system links and neural plasticity. Neurology(Jan. 22):1.
Flor, H., et al. 1995. Phantom-limb pain as a perceptual correlate of cortical reorganization following arm amputation. Nature 375:482.
Recanzone, G.H., C.E. Schreiner, and M.M. Merzenich. 1993. Plasticity in the frequency representation of primary auditory cortex following discrimination training in adult owl monkeys. Journal of Neuroscience 13:87.
Mercury mystery solved when sparks fly
Light flashes of mercury in glass tubes, a phenomenon known as "barometer light," is caused by the buildup of static electricity.
Budakian, R. . . . S.J. Putterman. 1998. Picosecond discharges and stick-slip friction at a moving meniscus of mercury on glass. Nature 391(Jan. 15):266.
Reports raise questions about Martian rock
Two new studies chip away at--but do not entirely undermine--the case that a meteorite from Mars contains fossils of ancient life on the Red Planet.
Bada, J.L., et al. 1998. A search for endogenous amino acids in Martian meteorite ALH84001. Science 279(Jan. 16):382.
Jull, A.J.T., et al. Isotopic evidence for a terrestrial source of organic compounds found in Martian meteorites Allan Hills 8400 and Elephant Moraine 79001. Science 279(Jan. 16):366.
Cowen, R. 1998. Fossils from Mars: Point, counterpoint. Science News 153(Jan. 3):11.
______. 1997. C'est la vie. Science News 152(Nov. 1):284.
______. 1997. Meteorite still holds inklings of life. Science News 151(March 29):190.
______. 1997. More findings about life on the Red Planet. Science News 151(Feb. 8):87.
______. 1996. Searching for life in a Martian meteorite. Science News 150(Dec. 14):380.
______. 1996. Interplanetary odyssey. Science News 150(Sept. 28):204.
______. 1996. Meteorite hints at early life on Mars. Science News 150(Aug. 10):84.
Novel X rays highlight clogging arteries
A new nuclear medicine technology appears capable of detecting atherosclerosis painlessly--before symptoms occur.
Elmaleh, D.R., et al. 1998. Rapid noninvasive detection of experimental atherosclerotic lesions with novel 99mTc-labeled diadenosine tetraphosphates. Proceedings of the National Academy of Sciences 95(Jan. 20):691.
Neutrinos to survey Earth's radioactivity
Detecting antineutrinos generated by terrestrial radioactive decay could provide a direct measurement of Earth's radioactive heat production.
Raghavan, R.S., et al. 1998. Measuring the global radioactivity in the earth by multidetector antineutrino spectroscopy. Physical Review Letters 80(Jan. 19):635.
Rothschild, C.G., M.C. Chen, and F.P. Calaprice. Preprint. Antineutrino geophysics with liquid scintillation detectors. Available at http://xxx.lanl.gov/abs/nucl-ex/9710001.
Monastersky, R. 1993. Using neutrino telescopes to undress Earth. Science News 144(Dec. 18&25):405.
Protein gives the heads-up to frog embryos
By manipulating a newly discovered protein involved in the development of a head during embryo growth, investigators have produced tadpoles with enlarged heads, two heads, or no head at all.
Glinka, A. . . . C. Niehrs. 1998. Dickkopf-1 is a member of a new family of secreted proteins and functions in head induction. Nature 391(Jan. 22):357.
Glinka, A. . . . C. Niehrs. 1997. Head induction by simultaneous repression of Bmp and Wnt signalling in Xenopus. Nature 389(Oct. 2):517.
Homing in on Milky Way's black hole
New measurements add to the evidence that the center of the galaxy contains a black hole as massive as 2.6 million suns.
1998. Press briefing of the American Astronomical Society. Washington, D.C.
Planet stages a comeback
One year after a researcher had cast doubt on the finding that a nearby, sunlike star has its own planet, three new studies uphold the initial discovery.
Brown, T.M., et al. Preprint. A search for line-shape and depth variations in 51 Pegasi and Tau Bootis. Astrophysical Journal Letters 494(Feb. 10).
Gray, D.F. 1998. A planetary companion for 51 Pegasi implied by absence of pulsations in the stellar spectra. Nature 391(Jan. 8):153.
Hatzes, A.P., W.D. Cochran, and E.J. Bakker. 1998. Further evidence for the planet around 51 Pegasi. Nature 391(Jan 8):154.
Cowen, R. 1997. 51 Pegasi: A star without a planet? Science News 151(March 1):133.
Leptin: The new gut buster?
The obesity hormone leptin triggered rats to lose fat, especially from their abdomens.
Barzilai, N. . . . L. Rossetti. 1997. Leptin selectively decreases visceral adiposity and enhances insulin action. Journal of Clinical Investigation 100(Dec. 15):1.
Pennisi, E. 1994. Fanfare over finding first fat gene. Science News 146(Dec. 3):372.
Travis, J. 1995. Mouse obesity cured by hormone. Science News 148(July 29):68.
Mother's milk contains leptin
A hormone thought to control obesity in humans has been discovered in breast milk.
Houseknecht, K.L., et al. 1997. Leptin is present in human milk and is related to maternal plasma leptin concentration and adiposity. Biochemical and Biophysical Research Communications 240:742.
Cloning debate erupts anew
A scientist has proposed cloning a human being, prompting the president to urge a ban on such efforts.
Prozac works on clams and mussels
Giving Prozac to fingernail clams and zebra mussels jump-started reproductive behavior.
Fong, P.F., et al. 1997. Selective serotonin reuptake inhibitors (SSRIs) induce spawning and parturition in freshwater bivalves. Meeting of the Society for Integrative and Comparative Biology. Boston.
Additional information can be found at http://www.ansc.purdue.edu/sgnis/.
1992. Zebra mussels: Biology, impacts, and control. Nalepa, T., and D.W. Schloesser, eds. Boca Raton, Fla.: Lewis Publications.
Ram, J., et al. 1996. Physiological aspects of zebra mussel reproduction: Maturation, spawning, and fertilization. American Zoologist 36(June):326.
Young armadillos just wanna be friends
Although adult armadillos tend to be hostile to each other, young armadillos calmly accept both related and unrelated juveniles.
Loughry, J., et al. 1998. Behavioral interactions between juvenile nine-banded armadillos (Dasypus novemcinctus) in staged encounters. American Midland Naturalist 139(January):125.
Supermales even more superior outdoors
Plants that test out in a greenhouse as supermales may turn out to father even more seeds when set out in the wild.
Mitchell, R., and D.L. Marshall. 1998. Nonrandom mating and sexual selection in a desert mustard: An experimental approach. American Journal of Botany 85(Jan. 1):48.
A relative of nicotine eases pain
A compound related to nicotine may match morphine's pain-killing prowess and have fewer side effects.
Bannon, A.W. . . . S.P. Arneric. 1998. Broad-spectrum, non-opioid analgesic activity by selective modulation of neuronal nicotinic acetylcholine receptors. Science 279(Jan. 2):77.
Pennisi, E. 1992. Pharming frogs. Science News 142(July 18):40.
The instruments of cell suicide
Two newly discovered proteins help a cell carve up its DNA when it kills itself.
Enari, M. . . . S. Nagata. 1998. A caspase-activated DNase that degrades DNA during apoptosis, and its inhibitor ICAD. Nature 391(Jan 1)>:3.
Wyllie, A. 1998. An endonuclease at last. Nature 391(Jan 1):20.
Sacred Secrets of the Caves
Archaeologists go underground for enlightenment on ancient Maya
Major Maya settlements were linked with caves, which served as landmarks of political power and spiritual meaning.
Brady, J.E. 1997. The role of caves at Dos Pilas. American Anthropology 99(September):602.
Highway, Heal Thyself
Cracking the code of self-healing asphalt could extend the life of roads
The chemical composition of asphalt might be modified to promote crack healing.
Kim, Y., and Y.R. Kim. 1997. In-situ evaluation of fatigue damage growth and healing of asphalt concrete pavements using stress wave method. Transportation Research Record.
1988. Bugs in the cracks. Science News 133(April 30):285.
Amato, I. 1989. Making concrete smarter than it looks. Science News 135(May 6):284.
Pennisi, E. 1992. Rubber to the road. Science News 141(March 7):155.
Weisburd, S. 1988. Hard science. Science News 134(July 9):24.
Table of Contents - 1/24/98