There’s a new biography of Louis Agassiz. I reviewed it for C&EN. If you’re interested in Agassiz’s personal relationships, including his marriages, his students, and his Alpine collective, this is the book for you. But if you want to know how Agassiz’s scientific theories of race drove the the concept of “scientific racism” in America for nearly a hundred years, read something else. Might I suggest Louis Menand’s The Metaphysical Club?