Comments on: Don’t Take O2 for Granted https://gregladen.com/blog/2009/03/22/dont-take-o2-for-granted/ Tue, 24 Mar 2009 10:39:16 +0000 hourly 1 https://wordpress.org/?v=6.4.8 By: Greg Laden https://gregladen.com/blog/2009/03/22/dont-take-o2-for-granted/#comment-533029 Tue, 24 Mar 2009 10:39:16 +0000 http://scienceblogs.com/gregladen/2009/03/22/dont-take-o2-for-granted/#comment-533029 Dunc. That could only mean one thing….

]]> By: Dunc https://gregladen.com/blog/2009/03/22/dont-take-o2-for-granted/#comment-533028 Tue, 24 Mar 2009 08:12:10 +0000 http://scienceblogs.com/gregladen/2009/03/22/dont-take-o2-for-granted/#comment-533028

In fact, this could be a test … non-gaseous planets that have previously supported earth-like life would not fizz so much under this test, but those that never had life would be likely to fizz like crazy.

They tried that on Viking. The results were inconclusive.

]]> By: mark https://gregladen.com/blog/2009/03/22/dont-take-o2-for-granted/#comment-533027 Mon, 23 Mar 2009 13:15:24 +0000 http://scienceblogs.com/gregladen/2009/03/22/dont-take-o2-for-granted/#comment-533027 There was an article in Science a few months ago on the origin and cycling of oxygen on Earth. What I really liked about the article was how it pointed out the energy implications, and its end: Nature certainly has provided an incredible source of potential energy for the evolution of life on Earth.

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