"1900 - 1999" . . . . . . . . "Science in the 20th century" . . "Science in the twentieth century a social-intellectual survey" . . . . . . . . . . "In this course, you learn the distinctive ideas that characterize 20th-century science, organized into five major themes: matter and energy, the universe, earth, life, and humanity." . "History" . "Presents 36 lectures discussing the evolving relationship of science with society during the 20th century." . . . .