(Revelation 11:18) "those who destroy the earth"

"We as a society risk being counted among "those who destroy the earth"".  This from the letter signed by 200 Evangelicals, who teach at universities and hold Masters or PhD in either: Climate Science, Chemistry, or Biology.  The letter addresses global warming and is to the United States Congress.  It's one page, you can read it and see who signed at http://www.eenews.net/assets/2013/07/15/document_cw_02.pdf