The Evolution of Ice Age Anatomy

One of the things that's really transformed in how we think about their anatomy is that it was always, oh, they were ice age. They were hyper-optic adapted. That is sort of shifting a bit because you can look at like the fluid dynamics and model like the air that would go into their noses. So it may be that that's more what we're seeing. It's just the intensity of their lifestyles rather than the climate.