Temperatures on Earth

[Angrboda]

From what I understand, it's theorized that we may have evolved a great deal of our innovation as an animal due to climate instability in Africa. I forget the ages, but the climate in Africa where we evolved was unstable and varied dramatically for a million years or so. Looking at that in hindsight, it becomes obvious that we developed to tolerate certain temperature ranges because we didn't need to adapt to more extreme conditions throught our evolutionary history. We didn't start moving out of Africa and into less hospitable climes until very late in our evolutionary history. Now that we depend on machines, clothing and technology to assist our climate control, we'll probably never directly evolve to take advantage of more extreme climes, but our technology may not have such limits.