Glad to be back on topic.
No doubt, since 1998 temps are down about 0.1° C. How long it will continue is unknown. I like History. Lots to learn there, so lets look. http://www.aip.org/history/climate/20ctrend.htm
Several charts here. See first chart- Global Temps 1850-2008
The overall trend is up0.8° not down. Easy to see a few cooling trends in that same period- note1880-1910 roughly 30 yrs=0.3° decrease, also 1940-1970 roughly 30yrs=0.15°decrease.
Notice a pattern? I do.
Perhaps a more telling graph is further down the page-charts 4&5
That is what I mean by temps. following mans progress.
Could it be a natural occurrence? Possibly
Could it be influenced by humans? Possibly
I don't know. But I wouldn't completely dismiss it as some do.
By the way folks, I'm just regular guy with an internet connection. It doesn't take long to find information IF you look. And keep an open mind.