I think that environmentalism is one of the most dangerous movements in today's world of ideas. The hatred of man is the main idea of environmentalism. For a tragic example on how the green movement indirectly has caused deaths, read Hannes Hacker's article, Earth Worshippers Cause Death in Space: Environmental Dogma Has Led to the Sacrifice of Fourteen Astronauts on the Space Shuttle. The Twin Towers of the World Trade Center would have been better prepared if they had used asbestos as insulation material.
For more on environmentalism, go to Magnus Kempe's blog, Jinn of Quality and Risk.
Book recommendation: Return of the Primitive: The Anti-Industrial Revolution.