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Natural Hukiry (ISSN 0028-07 12) is published monlhly by 

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Cover; A false-color electron 

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4 



The Cutting Edge of 



Evolution 



WouW Charles Darwin, if he were alive 

 today, be a geneticist? an entomologist? a 

 paleontologist? a field biologist?... or even 

 a humorist? The answer could well be 

 "all of the above." The authors of the 

 eighteen articles in this special issue on 

 evolution come from diverse fields. They 

 are, to varying degrees, all descendants 

 of Darwin. 



6 The Power of This View 



of Life Stephen Jay Gould 



10 The Origin of Life 



Anthony Mellersh 



14 Life's Expanding Reabn 



Andrew Knoll 



^-^1^^^^^^ 







iy.il ■: ■ \i -/^ ' 1 .:;-^'^v-i^\-' 1 



22 One Giant Step for Life 



KarlJ.Niklas 



26 A Spinal Column 



Roger L. Welscli 



31 



The Games Species Play 



You don't have to go the Galapagos 

 Islands to witness the working of 



evolution. It's happening everywhere: 

 inside and outside of organisms, 

 between enemies, and among friends. 



32 Feminist Bacteria of 

 Ladybird Beetles Gregory 



Hurst and Michael Majerus 



36 Genetic Invasion of the 

 Insect Body Snatchers 



Jack Werren 



39 Bacteria Break the 

 Antibiotic Bank 



John Maynard Smith 



2 Natural History 6/94 



