A reservoir of abiotic methane has been discovered in the Arctic Ocean. This means that there is more of the greenhouse gas trapped under the seabed than previously thought.
News: A reservoir of abiotic methane has been discovered in the Arctic Ocean https://cage.uit.no/news/new-source-methane-discovered-arctic-ocean/
Study: Abiotic methane from ultraslow-spreading ridges can charge Arctic gas hydrates http://geology.geoscienceworld.org/content/early/2015/03/27/G36440.1.full.pdf+html?ijkey=tNRcKxKHNcG5s&keytype=ref&siteid=gsgeology
Clathrate gun hypothesis http://en.wikipedia.org/wiki/Clathrate_gun_hypothesis
Methane clathrate http://en.wikipedia.org/wiki/Methane_clathrate
Photo: Gashydrat mit Struktur
http://upload.wikimedia.org/wikipedia/commons/6/60/Gashydrat_mit_Struktur.jpg
Methane Bubbles, Alaska http://photography.nationalgeographic.com/photography/photo-of-the-day/methane-bubbles-thiessen/
Video: Playing with Methane Gas Bubbles on a Frozen Lake
http://www.liveleak.com/view?i=45b_1423120932