The impact of the Industrial Revolution has been double-edged in most regards; however, in the case of the environment there is little doubt that more harm has been done than good. By making it so possible for human population to increase, and by creating an insatiable demand for raw materials, industrial life has seriously damaged the earth. The story is on-going and worsening-- the effects of global warming are one example of potential disaster.
Global Warming-- the Greenpeace page covering the topic
Toxic Waste-- the problem of toxic wastes, according to Greenpeace
Amazing Environmental Organization Directory-- just what it says
Pollution Web Directory--A Yahoo-like search of pollution topics
Energy Conservation-- a search of sites related to energy conservation
The Sierra Club-- a search page of information on the Web offered by the Sierra Club