Quote from futurecurrents:
The climatologists know what caused the previous spikes.
CO2 caused the spikes, after orbital changes caused small variations in solar gain. Were it not for CO2 the spikes would be much smaller and perhaps would not be spikes at all. Because CO2 is a greenhouse gas. CO2 outgassed from the earth as temps rose, accentuating the warming in a feedback loop. Ice and snow cover extent variations also accentuated the changes.
Well, lets forget that ALL of the proxy data shows temps LEADING CO2, what caused the temps to spike?
Hell, lets assume you're right and CO2 leads temps. What the hell caused the spike in the CO2?