Contents

06 May 2005
Vol 308, Issue 5723

About The Cover

Cover image expansion

COVER Computers processing data for the Oxford University project ClimatePrediction.net (see page 810). Scientific computing ventures in fields as varied as number theory, genomics, and particle physics have asked people to donate their computers' spare CPU cycles to create a virtual machine that dwarfs the top supercomputers. [Image: Chris Valentine/hockeyphotos.com; Martin Dzbor/KMi, Open University]