In this dynamic account, award-winning science writer Ann Gibbons chronicles an extraordinary quest to answer the most primal of questions: When and where was the dawn of humankind?Following four intensely competitive international teams of scientists in a heated race to find the missing link the fossil of the earliest human ancestor Gibbons ventures to Africa, where she encounters a fascinating array of fossil hunters: Tim White, the irreverent Californian who discovered the partial skeleton of a primate that lived 4.4 million years ago in Ethiopia; French paleontologist Michel Brunet, who...