You bet they are. Think about all those people traveling from one climate change conference to another. Think about all those tons of global-warming-related newspapers columns field-researched, produced, printed and then carried around in countless countries.
And think also of the countless discussions all over the ‘net about (yes) climate change and global warming. Some of them, admittedly, by the same people meeting up in somebody else’s blog like old friends singing the same old (counterpointed) tune. As commented at the Global Warming Infographic blog post by a “Kevin Ahern“:
I think it is marvelous that seemingly endless groups of people chase each other around the internet as soon as a blog about AGW crops up . It is obvious that these ‘discussions’ have been had before all around the world. In fact we are now getting to the merry-go-round of ‘cut and paste/ insert link here’ debate. The more I try to understand the issues the more I realise that MOST people with an opinion don’t understand the issues . And NO I am not going to follow link after link over and over to reach the opinion I have ……. I don’t understand the intricaces of the earths climate and nobody else does either.
I neither accept or deny , I can neither prove or disprove, and the burden of proof either way is probably beyond my,(and many many others) comprehension anyway.
So sorry if i don’t lose too much sleep over the issue.
(guilty as charged, Guv!)
Anybody in the mood of computing an estimate…what is the “climate forcing” caused by our collective “hot air”?