Roy Spencer resigned from NASA because of pressure from the Clinton Administration regarding testimony to Congress on climate change. Governments have shaped the public perception of Anthropogenic global warming and climate change by intimidating or isolating those who do not support the position that fossil fuels are destroying the planet. Here is an article by Roy Spencer on Bad Science, and how there has always been a lot of it around, particularly when politics is involved.

http://article.nationalreview.com/print/?q=OTY4NWVjYjc1NjJhZDRjNGVhMDhiOGJjZmUxNGI2NDI=