You obviously didn't even read the first couple paragraphs of the article. (religion.blogs.cnn.com)
A constant temperature is only one possibility (and, as it turns out from the next couple paragraphs in the paper, the right possibility). (wattsupwiththat.com)
If that wasn't enough of a spoiler for you then read on, if it was too much then stop reading and skip the next couple paragraphs. (thatvideogameblog.com)