What took so long for humans to appear on Earth? The Earth is 4.6 billion years old, and life began about 4 billion years ago, yet humans—the only intelligent, technological species we know of in the ...
"The essays in this volume arise from papers given at the conference on 'Technological change' at Rhodes House and Wadham College, Oxford, from 8 to 11 September 1993"--Introd. The social construction ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results