When I was a kid I read Nancy Drew and wanted to solve mysteries. I grew up to become a geologist but sometimes hoped I could become a writer. Sarah Andrews is a geologist and a writer, whose character, Em Hansen, is a geologist who solves mysteries. How could I not love these books? This one is beautifully written, especially regarding the conflicts between applied geology and true environmentalism, between careers and marraige/motherhood. I couldn't put it down until I finished it, and then when I did I ordered all the Em Hansen books I hadn't yet read!