If you’re in the market for a human skeleton model, it’s probably because you’re a teacher, professor, or student. These three-dimensional models are essential tools to help teach or learn ...

If you’re in the market for a human skeleton model, it’s probably because you’re a teacher, professor, or student. These three-dimensional models are essential tools to help teach or learn ...

If you’re in the market for a human skeleton model, it’s probably because you’re a teacher, professor, or student. These three-dimensional models are essential tools to help teach or learn ...

Jan Zalasiewicz enjoys Brian Switek’s exploration of how the human scaffold — and our ideas about it — evolved.