While there's still a lot of uncertainty about the nature of dark matter, it feels like physicists are closing in on the answer.
MIT HS Physics Open Courseware - Apr 07, 2013
MIT has selected relevant material from their introductory courses to support students as they study and educators as they teach the AP* Physics curriculum.
Physics242 - Jan 17, 2013
This is an experienced AP Physics Teacher's Blog
PhysicsWorld App for iPhone and iPad - Dec 31, 2012
Staying informed as you go has never been easier. physicsworld.com newsflash allows you to download the latest news articles from physicsworld.com directly to your iPhone, and free of charge.
Light in the Dark - Dec 30, 2012
Scientists may be on the brink of identifying a mysterious form of matter.