One of the best-known examples of Plimer's errors is his view on the contribution of volcanoes to global warming. Plimer maintains that volcanoes produce more carbon dioxide than human activity. However, the US Geological Survey (USGS) reports that humans are currently releasing about 100-300 times as much C02 per year than the estimated annual production from volcanoes. The US government's Environmental Protection Agency (EPA) criticised Plimer's statement as having "no factual basis."
http://www.carbonbrief.org/profiles/ian-plimer/
Hmmm... (The blog where the above is published looks very much lefty-loony, though, going by the "about us" profiles.)
I saw this as well. It seems to me that if some “facts” like we see in this post (volcanoes etc.) are presented then there should be something to back them up. Otherwise they are too easily challenged as you can see by clicking on your link.
It’s not a good idea for us to fall into the same trap that the Lefties do - accepting everything based on consensus/credentials. A little scientific proof would be a much better choice.