How about sharing your six minute presentation?
Sure.
I start off with asking if they think climate is a steady state thing. Do they AUTOMATICALLY get the exact same climate as their ancestors before them? Throughout the history of mankind...has every human ALWAYS been the recipient of the same climate as their fore-fathers.
Then I move to a history of recent climate change. It warms, it cools (Holocene Climate Optimums [Egypt flourishes then famine], Roman Climate Optimum, Dark Ages, Medieval Warm Period-Renaissance, Little Ice Age, Present).
I go into the COOLING and history of LIA (Little Ice Age). Then I move into what comes AFTER COOLING. I ask if it warmed after the ice age and if they think glaciers MELTED after the ice age? AND if so, how long that took. I say: "You know those glaciers in Switzerland that they are worried about melting? Less than 500 years ago there were priests at the foot of those glaciers casting the demons out of them because they were advancing SO FAST. They were swallowing up whole towns...fields...vineyards. Now they are receding (and really...in the grand scheme of things is 500 years that long?). Kinda seems like they don't belong there in the FIRST place. So what makes us think that it's something WE are doing that is making them disappear...when they were not there 500 years ago? We didn't make them show up...RIGHT?
I then touch on the the fact global warming is caused by the sun and solar activity. LIA was caused by the Maunder min and that the lack of sunspots allowed galactic rays to create more clouds. When the sun is active, there is more solar wind and that keeps galactic rays away from the earth and thus there is less cloud cover. There is a scientifically links DIRECT relationship between cosmic rays and cloud cover (wonder how many FReepers knew that...which is why CYCLE 25 disappearing is a little frightening).
Next we discuss the great data variability in temps with the satellite data vs terrestrial data.
Terrestrial data is contaminated. Studies show up to 86% of ALL temp. sensors are heat contaminated due to heat island...most by over 1 deg C and 64% are contaminated by 2C.
Data also shows areas where urban growth is greatest, there is a higher impact on temps...especially in overnight lows. AND due to end of the Cold War and a decrease in funding, we have lost thousands of observing sites across the globe in sparse areas. This has left the majority of the observing sites in urbanized areas.
Two observing sites near Marysville, CA (only 10 miles apart) have been continuously observing for over 100 years. One still resides in a field...just like it did over 100 years ago and one now resides in the city. Guess which one shows global warming? Average them BOTH and they show global warming...but is it really?
Satellite measurements show we have stopped warming. AGW crowd wanted to use satellite as a tool until it went against the agenda. Now they want to use land based data...but again 86% of ALL observing sites ARE contaminated by 1C...and yet EVEN the AGW crowd says we've only warmed by .4C.
So does that mean we've cooled?
Also...think about it logically. CO2 is such a SMALL percentage of greenhouse gas. Plus, ice core samples have proved that CO2 is a lagging factor is temp...not a leading factor. They have also proved that there have been periods in the past where the CO2 levels have been MUCH higher than they are now...several times higher...and yet the temps did not respond in a greenhouse manner. Again...a lagging indicator. Water vapor is the most important greenhouse gas. CO2 makes up a very small percentage...and man's contribution to that CO2 total is smaller still.
THEN the final question: But...let's assume I am ALL wrong. Let's go back to the beginning. In the HISTORY of mankind...can you show me ONE EXAMPLE where mankind EVER suffered as a whole from global warming? The Egyptians flourished, The Romans thrived. Cooling brought on the dark ages and the plague. The only GOOD thing that global cooling did was cause the English (my ancestors here in the US) to switch from wine producing to beer making...and it drove them to seek America. Other than that...nothing good has ever happened when the earth cooled.