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Features

The Mid-Ocean Ridge

It is the longest mountain chain, the most active volcanic area and until recently the least accessible region on the earth. New maps reveal striking details of how segments of the Ridge form and evolve

By Kenneth C. Macdonald and Paul J. Fox

Science in Pictures: Frogfishes

Masters of aggressive mimicry, these voracious carnivores can gulp prey faster than any other vertebrate predator

By David B. Grobecker and Theodore W. Pietsch

RU 486

This controversial drug is now used widely in France to terminate unwanted pregnancies. Yet the compound was not invented for that purpose and actually has many possible applications

By Andr Ulmann, Daniel Philibert and Georges Teutsch

Pluto

The ninth planet has a huge moon, a surface covered with frozen methane and a wispy atmosphere that may fall as snow periodically.. It may be a relic from the formation of the solar system

By Richard P. Binzel

Oliver Heaviside

An eminent Victorian mathematical physicist who despised mathematical rigor, a shy man who pilloried his enemies in print, Heaviside laid the foundations of modern electric-circuit design

By Paul J. Nahin

Biosonar and Neural Computation in Bats

Bats extract remarkably detailed information about their surroundings from biosonar signals. Neurons in their auditory systems are highly specialized for performing this task

By Nobuo Suga

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