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Features

Energy-Storage Systems

Energy reservoirs consisting of pumped water, compressed air, batteries and ways of storing heat and "cold" can do much to help coal, nuclear and solar energy replace substantial quantities of oil

By Fritz R. Kalhammer

Gene Transplantation and the Analysis of Development

Purified genes microinjected into an amphibian oocyte can be "read" accurately and abundantly. The oocyte may serve as a living test tube for studying the molecular details of gene regulation in development

By J. B. Gurdon and E. M. De Robertis

Programming Languages

The nature of information processing has been transformed over the past 25 years by high-level programming languages, which provide a variety of mechanisms for encoding complex problems to be solved by computer

By Jerome A. Feldman

The Neanderthals

They flourished from western Europe to central Asia between 75,000 and 35,000 years ago. The differences between them and later peoples are not as great as was once thought but still call for an explanation

By Erik Trinkaus and William W. Howells

Electrical Responses Evoked from the Human Brain

Minute voltage shifts generated by the sensory regions of the brain can be recorded from the scalp. These recordings yield clues to the functioning of the human brain in health and neurological disease

By David Regan

Tephra

Airborne fragments from an erupting volcano, known collectively as tephra, come in a wide variety of sizes, shapes and compositions. The study of tephra deposits assists in the dating of ancient events

By Laurence R. Kittleman

Departments

  • 50 and 100 Years Ago, December 1979

  • Implantable Drug-Delivery Systems

  • Science and the Citizen, December 1979

  • The Decay of the Vacuum

  • Letters

    Letters to the Editors, December 1979

  • Recommended

    Books, December 1979

  • Mathematical Recreation

    Mathematical Games, December 1979

  • Amateur Scientist

    The Amateur Scientist, December 1979

  • Departments

    The Authors, December 1979

  • Annual Index 1979

  • Bibliography, December 1979

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