Blogiversity.org

I recently came across an online health community with roughly 700 groups discussing topics ranging from alternative medicine to lung cancer, from sexual health for seniors to pregnancy and childbirth. What I'm finding valuable is a group sponsored by NORD, the National Organization for Rare Diseases...

I saw this story on a blog and thought I would pass it along. There was a professor who held up a glass of water in front of his students and asked what it weighed. They said it weighed almost nothing of course. He then asked what would happen if he held it up like that for half an hour. Of course it...