[Ragnar54]

When things were warmer 7,000 years ago, there was not a city of 2,000,000 less than 40 miles from the glacier. Nor did Canada’s largest port (Vancouver) exist then. Nor did the trans-Canada highway exist then. Nor were there various industrial developments (including forestry). All of these things contribute to local warming and forms of pollution (e.g., dust) that can contribute to a glacier melting. These local factors would have to be eliminated before it could be claimed that the globe is as warm now as it was 7,000 years ago, but “scientists” on the Global Warming gravy train are incredibly lazy. The fact that the Medieval Warm Period did not cause such an extensive retreat of the glacier all but proves that the cause is not “Global Warming”.

[lepton]

When things were warmer 7,000 years ago, there was not a city of 2,000,000 less than 40 miles from the glacier. Nor did Canada’s largest port (Vancouver) exist then. Nor did the trans-Canada highway exist then. Nor were there various industrial developments (including forestry). All of these things contribute to local warming and forms of pollution (e.g., dust) that can contribute to a glacier melting. These local factors would have to be eliminated before it could be claimed that the globe is as warm now as it was 7,000 years ago, but “scientists” on the Global Warming gravy train are incredibly lazy. The fact that the Medieval Warm Period did not cause such an extensive retreat of the glacier all but proves that the cause is not “Global Warming”.

There are several screwy things in the report, but yeah, even if you accept that the MWP was regional (Europe, North America and Siberia being the "region"), it still doesn't follow.