Can I propose another crackpot theory in order to scare you into buying offsets? Global Dieting.?

Readers of this post might be interested to learn that the earths' magnetic poles actually reverse every 100,000 years or so. ( no joke) But before they completely reverse they tend to wander further toward the equator. Knowing that the magnetic field surrounding earth is a major protection source of the Sun's solar rays (affected by the shape and intensity of the magnetic force) then it stands to reason that variation will occur naturally over time, leading to ice ages and times of higher heat, condensed water, and Co2 ges in the environment. All with or without turning over the engine on your SUV.