The reason you won't see it on CNN or the BBC anytime soon is they tend to have a (admittedly minimal) level of responsibility when reporting. Why go flaunting this story when you can pretty clearly tell its not even a remotely scientific study. Sources for this article include: about.com, a Canadian museum website, and a youtube video.
"The warning signs of an impending planetary catastropheof such great magnitude that the human mind has difficulty grasping it-would be the appearance of large fissures or rifts splitting open the ocean floor, a rise in the elevation of the seabed, and the massive venting of methane and other gases into the surrounding water." It doesn't take an oceanographer to know that this happens in the ocean EVERY DAY.
Just another one of those conspiracy theories looking for 5 minutes of fame. Its also quite a convenient to distract everyone from the real environmental impact this incident is having.