A Breath of Fresh Air: The Dramatic History of Atmospheric Oxygen Levels


10:30-11:00 am    Add
145 McCone Hall

Oxygen, which makes up roughly 20% of our atmosphere, is required by all animals and allows for key reactions, such as the formation of an ozone shield, to occur. Billions of years ago, however, the atmosphere was devoid of this gas. This discussion examines our knowledge of oxygen, as well as oxygen's impact upon the world and the evolution of animals.
Daniel Stolper, Assistant Professor, Earth and Planetary Science

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