For related information read our article on NASA aircraft probe Namibian clouds to solve global warming puzzle and view our Conservation topic page. (sciencemag.org)
The methane piece of the global warming puzzle is even more difficult to grasp because while its levels have steadily risen since the mid-19th century, they have leveled off in the past decade, and scientists aren't sure why — there could be less methane emissions or more destruction of the molecule as it reacts in the atmosphere. (livescience.com)
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