WHAT…Cover-ups? or not?

What are we to make of global warming verses earth warming? I was given the site below to chew on…it is a good gnaw.
http://townhall.com/columnists/WalterEWilliams/2009/07/15/epa_cover-up

Yet, this very day I was watching CNN news and watched an Iceland iceberg sink right behind the video that was being taken and caught the whole event as the iceberg sunk astoundingly and significantly. This next video is of Iceland and although not the very one I watched on the news today, it does show what I am talking about.
http://news.nationalgeographic.com/news/2008/10/081006-glacier-video-ap.html