Skip to main content

Features

Quantum Cryptography

For ages, mathematicians have searched for a system that would allow two people to exchange messages in absolute secrecy. Quantum mechanics has now joined forces with cryptology to achieve a major step in that direction

By Charles H. Bennett, Gilles Brassard and Artur K. Ekert

Histones as Regulators of Genes

Histones were once dismissed as little more than packing material for nuclear DNA. In fact, these proteins can both repress and facilitate activation of many genes

By Michael Grunstein

Diamond Film Semiconductors

Thin sheets of diamond, grown {rom a low-pressure gas and doped with impurities, may serve as the basis for a new generation of electronic devices

By Michael W. Geis and John C. Angus

Teaching Real Science

Educators are planning a revolution in science teaching. They face an uphill struggle.

By Tim Beardsley

Departments

  • How Many Species Inhabit the Earth?

  • Mountain Sickness

  • Singing Caterpillars, Ants and Symbiosis

  • Scavenging and Human Evolution

  • Letters

    Letters to the Editors, October 1992

  • Recommended

    Book Reviews, October 1992

  • 50, 100 & 150 Years Ago

    50 and 100 Years Ago: October 1992

  • Profile

    Illuminator of the Stars

  • Mathematical Recreation

    Murder at Ghastleigh Grange

  • Science and the Citizen

    The Edge of Chaos

  • The Best Little Yard Sale in New Mexico

  • Lying by the Book

  • Musseling In

  • Smart Wheels

  • Formula for Diabetes?

  • A Matter of Timing

  • The Cosmic Microwave Mirage?

  • Orphan Isotopes

  • Departments

    The Business of Education

  • Agenda 21: Sustainable Development

  • Technology and Business

    Storage Space

  • Different Strokes

  • Fine Grain

  • Billions of Buckytubes

  • Diagnosis by DNA

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
October 1992

Think Outside the Gift Box