Artful dating: researchers refine techniques to gauge the age of ancient sites
Article Abstract:
Researchers are using accelerator mass spectrometry and advanced carbon-extraction methods to date ancient rock engravings and paintings. The techniques rely on dating microorganisms sealed into the art by the varnish produced by other microorganisms or organic processes.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Misreading dyslexia: researchers debate the causes and prevalence of the disorder
Article Abstract:
Researchers around the world are divided over the causes and prevalence of dyslexia. While some believe that the disorder has a neurophysiological basis in most patients, others contend that the problem is related more to external factors and postnatal experience.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Dyslexia
Article Abstract:
A phonological model of dyslexia is discussed. It focuses on language processing as the problematic area. This model accounts for the fact why some individuals who have excellent reasoning and conceptualization abilities are dyslexics.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Artificial societies. High-tech help for ancient turtles. Setting a standard in multimedia software
- Abstracts: A new bestiary for aging research. Aging twins offer clues to late-onset illness. Japan: feeling the strains of an aging population
- Abstracts: A shore thing: lakeshore ecosystems are ill-equipped to handle development. Small is beautiful: Merv Wilkinson has been managing his little woodlot successfully for 50 years
- Abstracts: Australian researchers burn down the house. Kentucky researchers complete composite foot bridge. Texas researchers develop simulators for underground fluids
- Abstracts: Computational studies of the primary phototransduction event in visual rhodopsin