Since solar effects, both direct and indirect, are more than sufficient to account for net estimated temperature change over the period of significant fossil fuel usage, have humans been warming or cooling the planet? (junksciencearchive.com)
The IPCC is studying 250 years (or just 0.000027 %) of the 900 million years of estimated temperature change in Figure 1. (drtimball.com)
Given that the cosmic ray effect described by Svensmark would be more than sufficient to account for the net estimated temperature change since the Industrial Revolution, the key question becomes: Has human activity actually warmed, cooled or had no net impact on the planet? (foxnews.com)