Magazine

July-August 2003

Current Issue

July-August 2003

Volume: 91 Number: 4

American-born artist William Utermohlen, diagnosed with Alzheimer's disease in 1996, has chronicled the resulting emotional turmoil, and physical and mental decline, in a series of evocative self-portraits. The cover image, entitled "Mask (white)," was made around the time of his diagnosis. In "Alzheimer's Disease," Vernon Ingram describes the genetic basis and molecular pathology of Alzheimer's, as well as some cutting-edge therapies that may finally treat or perhaps even prevent the disease. (Photograph provided by Galerie Beckel Odille Boicos, Paris.)

In This Issue

  • Astronomy
  • Biology
  • Chemistry
  • Communications
  • Computer
  • Engineering
  • Environment
  • Ethics
  • Evolution
  • Mathematics
  • Medicine
  • Physics
  • Policy
  • Psychology
  • Sociology

Ice at the Lunar Poles

Richard Vondrak, Dana Crider

Astronomy Physics

That the Moon harbors ice at high latitudes is well known. The source of that water, however, may come as something of a surprise

Alzheimer's Disease

Vernon Ingram

Biology Chemistry Medicine

The molecular origins of the disease are coming to light, suggesting several novel therapies

The Value of Positive Emotions

Barbara Fredrickson

Psychology

The emerging science of positive psychology is coming to understand why it's good to feel good

Quantum Erasure

Stephen Walborn, Carlos Monken

Physics

In quantum mechanics, there are two sides to every story, but only one can be seen at a time. Experiments show that "erasing" one allows the other to appear