"Films for the Humanities & Sciences (Firm)" . . "American Museum of Natural History." . . . . . "Oxygen is key to Earth's success as a habitable planet. But where did it come from? And when and how did it begin to transform the early atmosphere? This science bulletin explains how scientists are coming to understand oxygen's origins - not by studying ancient air, but by retracing its impact on Earth's surface."@en . . "The rise of oxygen evolution of Earth's atmosphere"@en . "Videorecording"@en . . "Evolution of Earth's atmosphere"@en . . . "Educational films"@en . . . "Internet videos"@en . . . . . . "History"@en . . "Earth (Planet)" . .