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Old 08-10-2009, 10:27 PM   #42 (permalink)
cfg83
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jkp1187 -

Quote:
Originally Posted by jkp1187 View Post
Interesting. Hadn't heard that at all. Worth more investigation. Thanks.
I agree. I want an update on the research, because it was published six years ago :

Quote:
...

However, the authors of the report say uncertainty remains about the effects of hydrogen on the atmosphere because scientists still have a limited understanding of the hydrogen cycle. They also note that, unlike the case with CFCs and other atmospheric pollutants like carbon dioxide, the current situation is unique in that society has the opportunity to understand the potential environmental impact well ahead of the growth of a hydrogen economy.

Following is the text of the press release:

(begin text)

California Institute of Technology
June 12, 2003

Hydrogen economy might impact Earth's stratosphere, study shows

According to conventional wisdom, hydrogen-fueled cars are environmentally friendly because they emit only water vapor -- a naturally abundant atmospheric gas. But leakage of the hydrogen gas that can fuel such cars could cause problems for the upper atmosphere, new research shows.

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