August 21-September 3, 2000
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Other Items of Note:
Daniel B. Yarosh
The Molecular Biology of Aging. (... an overview of the biology and physiology behind longevity [controlled by genetic factors] and aging [controlled by environmental factors] in humans. The author is affiliated with a biotechnology company, and he writes about aging and longevity from the standpoint of what biotechnology [and especially what opportunities biotechnology companies have] can do to assist humans to avoid senescence. The author writes molecular biology may offer many more solutions [to slowing the aging process], but the one most likely to have an immediate impact is, of course, changing our behavior by maintaining healthier diets, drinking in moderation, not smoking, and avoiding sun exposure. Other keywords and phrases -- DNA, photoaging, Propecia, retinoids, telomerase, UV damage, Viagra -- from the text of the article)
Chemical Innovation Volume 30, Number 7 (July 2000): 20-24.
When Fire Ants Move In, Others Leave. (... a news article that describes research [beginning in May 1997] undertaken along the east coast of the United States by Amy Arnett and Christy Royer that uncovered new evidence about the long-range, and potentially long-term, ecological damage being wrought by an invasive species of fire ant. The author writes the red imported fire ant Solenopsis invicta displaces other ant species and upsets the structures of native communities of ants--disruptions that appear to be permanent. Other keywords and phrases -- biodiversity, community, diversity, effect, large scale, native species, recycling nutrients -- from the text of the article; see the article:
Nicholas J. Gotelli and Amy E. Arnett
Biogeographic Effects of Red Fire Ant Invasion.
Ecology Letters Volume 3, Number 4 (July 2000): 257-261
... for the scientific information supporting the information reported in the news article)
Science Volume 289, Number 5477 (July 14, 2000): 231.
Michael E. Mann
Climate Change: Lessons for a New Millennium. (... a perspective by a noted researcher of global warming and climate change. The author states a key factor hampering our ability to confidently assess the human influence on the warming of the past century is our limited understanding of the climate changes believed to have occurred in previous centuries. The author especially analyzes the results of a study by Thomas J. Crowley. Using a simpler model and comparing global warming of the twentieth century with climate variability over the past 1000 years, Crowley's study makes what may be the most compelling case to date for the assertion that anthropogenic [human-caused] greenhouse gas increases are behind the dramatic continued warming of the globe. Other keywords and phrases -- corals, EBM, Energy Balance Model, ice cores, radiative balance, radiative forcings, tree rings, 20th -- from the text of the abstract and the article)
Science Volume 289, Number 5477 (July 14, 2000): 253-254.
Thomas J. Crowley
Causes of Climate Change Over the Past 1000 Years. (... using an energy balance model [EBM], data from reconstructions of temperatures in the Northern Hemisphere over the past 1000 years, and indices of volcanism, solar variability, and changes in GHGs [greenhouse gases] and tropospheric aerosols over time, the author compared the global warming of the twentieth century with the temperature variability experienced over the past 1000 years and also analyzed the mechanisms that may be responsible for the temperature changes. Comparisons of observations with simulations from an energy balance climate model indicate that as much as 41 to 64% of preanthropogenic (pre-1850) decadal-scale temperature variations was due to changes in solar irradiance and volcanism. The author concludes the warming over the past century is unprecedented in the past 1000 years. And, the same climate model that can successfully explain much of the variability in Northern Hemisphere temperature over the interval 1000-1850 indicates that only about 25% of the 20th-century temperature increase can be attributed to natural variability [volcanoes, solar irradiance, etc.]. The bulk of the 20th-century warming is consistent with that predicted from GHG [greenhouse gas] increases. This provides further evidence that the greenhouse effect has already established itself above the level of natural variability in the climate system. For an overview of this article and related research, see the article by Michael E. Mann. Other keywords and phrases -- anthropogenic forcing, solar forcing, volcanic forcing -- from the text of the abstract and the article; please see the bibliography)
Science Volume 289, Number 5477 (July 14, 2000): 270-277.
How to find the above journals, magazines, and other publications? See Step 3: Locate of the Information Strategy for details.
Questions about any or all of the above? Please let me know.
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