Wait a minute: Does this mean that slight warming, with positive feedbacks, doesn't always lead to the Earth becoming an uninhabitable fireball?!

Climate fluctuations 115,000 years ago: Were short warm periods typical for transitions to glacial epochs?

ScienceDaily (Mar. 7, 2010) — At the end of the last interglacial epoch, around 115,000 years ago, there were significant climate fluctuations. In Central and Eastern Europe, the slow transition from the Eemian Interglacial to the Weichselian Glacial was marked by a growing instability in vegetation trends with possibly at least two warming events