What is the author's style in The Making of the Atomic Bomb by Richard Rhodes?

Rhodes provides extensive information on the biographical background and scientific accomplishments of the international collaboration of scientists that culminated in the creation of the first atomic bomb. In 1939, several scientists became aware of the theoretical possibility of creating an atomic bomb, a weapon of mass destruction vastly exceeding the potential of existing military arsenals. But it was not until the United States entered World War II, late in 1941, that priority was given to funding and organizing research into the creation of such a weapon in a secret operation referred to as the Manhattan Project.

Rhodes addresses the difficult moral and ethical dilemmas faced by the scientists of the Manhattan Project, particularly the implications of creating such a weapon of mass destruction. Originally concerned with "pure" scientific research, those who worked on the Manhattan Project were forced to consider the ultimate effect of their research efforts on the future of the human race.