Here’s a blog that is not just colourful and interesting, but well written, researched and uses great graphics. The Sustainable Scientist is written by Jenifer McIntyre, a PhD student at the U. of Washington, a NOAA star recipient and a great writer (who knew someone could be so left and right brained at the same time?)
Check out her most recent entry: http://sustainablescientist.blogspot.com/
