Photos: Green tech giants

A staircase of sustainably forested wood graces Building 43 of Google's Mountain View, Calif., headquarters. The walls of the building are layered with nontoxic cotton soundproofing material.

Elinor Mills/CNET

By Bill Detwiler

Bill Detwiler is Editor in Chief of TechRepublic and the host of Cracking Open, CNET and TechRepublic's popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the ...