ScienceDaily: Methane bubbles rising to the surface of fresh water. Credit: Image courtesy of University of Wisconsin-Madison [Click to enlarge image]
Studying stream bubbles isn’t exactly a walk in the park. What, with the mud and ticks, the long days hiking and swimming through mucky streams, the sun exposure and scratching brush.
But in the end, it may prove to be insightful. The bubbles coming from freshwater sources, new research suggests, may be a key and currently unaccounted for source of methane,…

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