# World Wide Oxygen Levels

**URL:** <https://boards.straightdope.com/t/world-wide-oxygen-levels/414336>\
**Category:** Factual Questions\
**Created:** [August 3, 2007, 8:48pm UTC](https://boards.straightdope.com/t/world-wide-oxygen-levels/414336 "2007-08-03T20:48:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![The\_Long\_Road](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@The\_Long\_Road](https://boards.straightdope.com/u/The_Long_Road)\
**Post date:** [August 3, 2007, 8:48pm UTC](https://boards.straightdope.com/t/world-wide-oxygen-levels/414336/1 "2007-08-03T20:48:16Z")

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I did a bit of web research but was having trouble finding good sources. If Carbon Dioxide levels are increasing is there a corresponding decrease in Oxygen levels? With all of the combustion going on, both natural and human, is our oxygen supply being slowly depleted?

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**Author:** ![Quartz](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/quartz/32/267_2.png) [@Quartz](https://boards.straightdope.com/u/Quartz)\
**Post date:** [August 3, 2007, 8:58pm UTC](https://boards.straightdope.com/t/world-wide-oxygen-levels/414336/2 "2007-08-03T20:58:58Z")

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Current CO[sub]2[/sub] levels are right down there in the noise: [0.038% (Wiki link).](http://en.wikipedia.org/wiki/Earth's_atmosphere)