Atmo-Time Machine

	Planetary Climate As a result of changes of the Earth's eccentricity, obliquity, and precession, the Earth's climate was affected. The Earth was swung into the glacial period lowering the average global temperature. However, amplifing factors such as ice and cloud albedos, marine and terrestrial biomasses and atmospheric CO2 contributed to this global cooling.
Quite a Bit Colder
During the glacial periods, the average global temperature fell to about 10°C from an interglacial average of about 15°C. Although this change may not seem too large, the effects were quite noticeable around the world. Thick glaciers covered a much larger portion of North America, and the climate changed subtiantially in lower latitudes as well.