Change: gasGas Dr. Ben Clennell, of Leeds University, England, is not the first to make note of the possibility of methane hydrates as a source for   View changes from previous version. (Word count: 2263)

Change: There were only format changes (bold, italics, etc.) in this version. See this version for details. (Word count: 2263)

Change:  During one of his dives, Brown became separated from his friends and while searching for them he was startled when he came across a strange   View changes from previous version. (Word count: 2263)