Magazine

January-February 2000

Current Issue

January-February 2000

Volume: 88 Number: 1

In recent years the production of poultry, eggs and pork has increasingly been conducted on an industrial scale, as illustrated by a four-deck laying house in Pennsylvania. The concentration of swine facilities with their waste lagoons and sprayfields in North Carolina's Coastal Plain has raised new water-quality issues, explored by Michael A. Mallin in "Impacts of Industrial Animal Production on Rivers and Estuaries." (Photograph by Larry Lefever for Grant Heilman.)

In This Issue

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

Fifty Years of Radiocarbon Dating

R. E. Taylor

Anthropology Physics

This widely applied technique has made major strides since its introduction a half-century ago at the University of Chicago

The Women Scientists of Bologna

Maria Cieslak-Golonka, Bruno Morten

Anthropology

Eighteenth-century Bologna provided a rare liberal environment in which brilliant women could flourish

Impacts of Industrial Animal Production on Rivers and Estuaries

Michael A. Mallin

Environment

Animal-waste lagoons and sprayfields near aquatic environments may significantly degrade water quality and endanger health

Connecting Materials Science and Music in Steel Drums

Lawrence Murr, Everaldo Tello

Physics

A serendipitous collection of scientific, especially metallurgical, principles created melodic instruments from sawed-off steel barrels

The Galactic Environment of the Sun

Priscilla Frisch

Astronomy

The heliosphere appears to protect the inner solar system from the vagaries of the interstellar medium

Scientists' Nightstand