LYN EVANS (NS 21/8) I don't know where you got that number, but it is just not true that only 52% of American Meteorological Society members agreed that climate change is happening and that it is mostly human caused.

In fact their current statement in force says: "The primary findings of climate change science have been well established in the peer-reviewed science literature and replicated by numerous independent investigators and methodologies.

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Blue-ribbon panels of scientists convened by organizations such as the National Academy of Sciences have carried out formal evaluations of scientific studies and provide a consensus opinion regarding climate change.

Leading scientific organisations beyond the AMS (eg. American Association for the Advancement of Science, American Geophysical Union, and European Geophysical Union) have considered the state of the science and are in consensus on the topic as well.

"There are small scientific differences as research continues to refine the details, but there is strong agreement on the primary findings and essentially no controversy with respect to them."

The nearest I can find to 52% is that it is a mischievous misquoting of a 2012 survey, in which 59% answered that it was due only to human causes.

But a lot didn't answer the question, a large number answered a mixture of human and natural causes in various ratios, and only 6% answered primarily natural causes.

A large majority indicated that they were worried or very worried, and if nothing was done it would be very harmful.