The American Geophysical Union, the world's largest organization representing earth and space scientists, has issued a new statement on the causes and consequences of recent climate change and possible responses.

Similarly, in the past few years the Royal Society, National Academy of Sciences (NAS), and American Meteorological Society (AMS) have issued statements endorsing a so-called consensus view that human activities are driving global warming.

What you don't hear is that these societies never allowed member scientists to vote on these climate statements. Essentially, in each case only two dozen or so members on ad hoc committees and governing boards of these institutions produced the "consensus" statements.