Peter deMenocal
In popular video, Dan Peña falsely claims humans aren't causing climate change
Claim:
Fifty-five thousand years ago the whole world was 2°C warmer than it is today[...] It's all cyclical; [human-caused greenhouse gas emissions are] not a fart in the wind. Sea level rise is not going to happen.
Natural variability can not explain modern global warming, as Heartland Institute report claims
Claim:
Neither the rate nor the magnitude of the reported late twentieth century surface warming (1979–2000) lay outside normal natural variability.
A lull in solar activity would have little effect on global temperatures; claims of “global cooling” are not based on science
Claim:
Forward projections of solar cyclicity imply the next few decades may be marked by global cooling rather than warming, despite continuing CO2 emissions.
Heartland Institute report incorrectly claims no evidence of human impacts in melting ice
Claim:
Melting of Arctic sea ice and polar icecaps is not occurring at ‘unnatural’ rates and does not constitute evidence of a human impact on the climate.
Global sea level rise is accelerating, despite Heartland Institute report’s claims otherwise
Claim:
Best available data show sea-level rise is not accelerating. Local and regional sea levels continue to exhibit typical natural variability—in some places rising and in others falling.
The Sun cannot explain recent global warming, contrary to what Heartland Institute report claims
Claim:
Solar forcings are not too small to explain twentieth century warming. In fact, their effect could be equal to or greater than the effect of CO<sub>2</sub> in the atmosphere.
Analysis of "The Climate Snow Job"
“This article is indeed a snow job, as the title implies. The author has twisted the facts and distorted the science wildly. The author is well known for his wildly inaccurate climate “forecasts”.”