# Has science determined an optimum CO2 level?

**URL:** <https://boards.straightdope.com/t/has-science-determined-an-optimum-co2-level/705520>\
**Category:** Factual Questions\
**Created:** [November 24, 2014, 8:48pm UTC](https://boards.straightdope.com/t/has-science-determined-an-optimum-co2-level/705520 "2014-11-24T20:48:01Z")\
**Posts on this page:** 1\
**Showing post:** 39

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**Author:** ![FXMastermind](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fxmastermind/32/7289_2.png) [@FXMastermind](https://boards.straightdope.com/u/FXMastermind)\
**Post date:** [November 29, 2014, 12:48am UTC](https://boards.straightdope.com/t/has-science-determined-an-optimum-co2-level/705520/39 "2014-11-29T00:48:27Z")

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A long term well done study of trees in Maryland reported hard wood trees are growing two to four times faster now, and it is due to increased CO2 levels.

> **[Study Finds a Tree Growth Spurt (Published 2010)](https://www.nytimes.com/2010/02/02/science/earth/02trees.html?_r=0)**
>
> Forests in the eastern U.S. appear to be growing faster in response to rising levels of carbon dioxide.

It’s one reason experts think the missing sink (where all the CO2 is going) might just be the forests.

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