http://www.truth-out.org/news/item/39957-release-of-arctic-methane-may-be-apocalyptic-study-warns
"A scientific study published in the prestigious journal Palaeoworld in December issued a dire -- and possibly prophetic -- warning, though it garnered little attention in the media. "Global warming triggered by the massive release of carbon dioxide may be catastrophic," reads the study's abstract. "But the release of methane from hydrate may be apocalyptic." The study, titled "Methane Hydrate: Killer Cause of Earth's Greatest Mass Extinction," highlights the fact that the most significant variable in the Permian Mass Extinction event, which occurred 250 million years ago and annihilated 90 percent of all the species on the planet, was methane hydrate."
