Senile dementia is one of the major health problems confronting mankind in this century. To some extent the problem has, of course, always existed. The condition was sufficiently troubling to classical philosophers and jurists to have apparently provoked comments by Solon in approximately 500 B. C. and Plato in the fourth century B. C. (Plutarch 1967 translation; Plato 1921 translation). Medical recognition can be traced at least as far back as the second century A. D. (Adams 1861). However, several factors have converged in this century to extend the absolute dimensions of the problem of senile dementia and to increase societal, medical, and scientific recogni­ tion of the magnitude of the condition. Perhaps the most important factor relating to the present importance of senile dementia is demographic. Although the human population has been increasing since the mid-eighteenth century, it has only been since the advent of the twentieth century that a decrease in mortality has been noted for those over the age of 45 (McKeown 1976). Consequently, the absolute number of aged persons and the proportion of increasingly aged persons in the populations of the world's industrial nations have been steadily increasing. For example, in the United States, 4% ofthe population was over the age of 65 in 1900. In the 1970 census, this proportion had grown to 10%.

The Hands-On Guide for Science Communicators

Health, Fitness & Dieting

Lars-Lindberg, Christensen

Psychology & Counseling

Springer

<p>This coffee-table book depicts famous features of the southern sky, such as the Magellanic Clouds and the Tarantula Nebula, as well as the brilliant star cluster Pismis 24, the beautiful NGC 1532-1 pair of <br>interacting galaxies and the radiant Toby Jug Nebula.</p>

Treasures of the Southern Sky

Arts & Photography

David Malin

Robert Gendler

Photography & Video

Adopted as the official book of the International Year of Astronomy (IYA) 2009, this stunningly illustrated history of telescopic discovery spans the range from the first telescopes via the Hubble Space Telescope to next generation platforms, and how they have changed and continue to change our view of the universe, our place  in it and where it all came from. EYES ON THE SKIES features numerous full-page photographs and is printed in high-quality color throughout. Also includes the official IYA DVD with 59 minutes of narrated text, expert comments and interviews, animations, computer simulations, science results, plus footage from observatories.

Eyes on the Skies: 400 Years of Telescopic Discovery

Wiley-VCH

See the best price to sell, buy, or rent books by Lars-Lindberg, Christensen. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Books by Lars-Lindberg, Christensen