What If Earth’s Atmosphere Was Pure Oxygen?

Imagine striking a match and having everything around you catch on fire, even if you were standing in a wet forest. And while that's happening, imagine being chased by giant insects. These are just a few of the things that would happen if you lived in a world where the atmosphere is pure oxygen.

What other things would happen on Earth?

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"Imagination will often carry us to worlds that never were. But without it, we go nowhere." — Carl Sagan

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Produced by Underknown in Toronto, What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.

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