"We have to get rid of the Medieval Warm Period!" 

many of them are under 30 years old.

Scaring people pays well.

Easy to find, if you're sincere about wanting to learn. Which you obviously are not. www.newscientist.com/article/dn16892-natural-mechanism-for-medieval-warming-discovered/#.U_u4rWMXPl8

@@markw4206 it doesn't mention anything about solar cycles? That affects our climate too and I believe it had a lot to do with the medieval warm period.

@@daman7129 So your complaint is the expanation from science doesn't fit with the one you made up based on... nothing?

@@imaweerascal He didn't make a complaint, nor did he base what he said on nothing. You utter weirdo.

Well, if you've "always" known it, then I'm not so impressed... 😏 You probably have your own, personal reasons for wanting it that way! Me, I was in the Green Party of Sweden for 18 years!!... Believing in AGW was a religion! 😅 (And still is, of course. To those who are still there...) But I figured it out, in the end. In conflict with nearly everyone I know!... 😛 Can I hear a: 👏👏👏?

Its not a fairytale though

A lot lower than in the past

MrOTLChamp is right. Law Dome ice core data (from Antarctica) shows atmospheric CO2 level peaking during the MWP, then falling to a low during the LIA. If you think the MWP was limited to the North Atlantic region, then how do you explain it showing up in Law Dome (Antarctic) ice cores? Here's the data: www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law_co2.txt Scroll down to to "75 Year Smoothed", then keep going. Watch CO2 rise to 284.1 ppmv ≈1170 (MWP), and then fall to 275.3 ppmv ≈1615 (LIA). The amount of warming needed to cause an 8.8 ppmv CO2 level drop in just 445 years (MWP peak to LIA low) is at least comparable to the amount of warming we've seen since the LIA. Here's how we know that. During the glaciation cycles, as temperatures fell, CO2 levels also fell, but the response time was longer than that. From interglacial peak temperature to glacial minimum temperature, which is thought to have corresponded to a global average temperature change of at least 6°C, the atmospheric CO2 level dropped by about 90 ppmv, but at least half of that CO2 level change was probably cause by ice sheet burial of sequestered carbon. If 6°C of cooling could cause a 45 ppmv CO2 change, then an 8.8 ppmv CO2 level change implies at least 1.2°C of cooling -- and probably more, since that was over just 445 years. 1.2°C is similar to the warming we've seen since the LIA, which suggests that the MWP was at least as warm, on average, globally, as the current climate.

If we live in a knife edge then who cares? If it's inherently unstable and the range of temperatures that humanity can thrive in is limited we are screwed no matter what. I guess it's a problem of having your crisis and eating it too or whatever. It's a big fraud.