You may have caught this news story already - it looks likely that the speed of light may not be a constant, but that it has gotten slower over time.... Here's a link to an article about this....

http://www.newscientist.com/news/news.jsp?id=ns99992650

By the way, one of the researchers who is proposing this (as mentioned in the article) is Prof. Paul Davies. I was lucky to have lunch with him a few years ago.... I actually told this story not long after we started Sowpub.... If you're interested, you can read it here....

http://www.sowpub.com/cgi-bin/forum/webbbs_config.pl?read=1171

Watch the windows of opportunity, since you never know when they will open! :)

- Dien Rice

P.S. Just in the past few days, I've been lucky to spend time with another well-known scientist/businessman, Prof. Dave Warner, and it was an incredible experience.... I might tell that story some time soon (if anyone is interested)....