However, man's small contribution to climate change can possibly tip the balance and that is something we should guard against, or at least try to measure and be aware of.
Been a bit slack keeping up with this thread, so in order to make up time, here's perhaps a hundred or more records all at once! (and some pretty cool pictures too) http://www.bbc.com/news/world-us-canada-31538987
as a casual observer, i've not seen much evidence of the weather indicating global warming up in Essex this year, still taking a pickaxe to the car winshield most mornings .