"One hundred and seventy-five years ago, a Swiss immigrant took America by storm, launching American science as we know it. The irrepressible Louis Agassiz, legendary at a young age for his work on mountain glaciers, focused his prodigious energies on the fauna of the New World. Invited to deliver a series of lectures in Boston, he never left, becoming the most famous scientist of his time. A pioneer in field research and an obsessive collector, Agassiz...