There is a very broad scientific consensus on the issue of man - made global warming that is arrived at through evidence from a wide range of research spanning the past century and more. (skepticalscience.com)
Perhaps firms haven't participated in public discourse because they can't reach consensus on these issues for themselves. (legalblogwatch.typepad.com)
When there is a clear consensus on an issue in the parliament, there is typically no popular vote. (politics.stackexchange.com)