Hi - I am Joshua Pearce, a physics professor at Clarion University of Pennsylvania. I strongly beleive in the open nature of information and think that wikibooks and sites are going to lead a beneficial intellectual revolution for humankind.
This semester I am experimenting with the Introduction_to_Physical_Science or IPS wikibook in my physical science courses. We will be using the wikibook to generate and practice solving basic physical science questions.
I contribute primarily to Appropedia, the site for collaborative solutions in sustainability, poverty reduction and international development. See my detailed and reasonably well updated profile there.