I don't promote this like I should, but Tangled Bank is a collection of biological articles from various blogs. The latest one is up over at Aetiology, so feel free to check it out if you're scientifically inclined. My favorite article so far is one by the host that talks about chicken pox parties and the dangers that come from exposing your child to chicken pox rather than vaccinating (news to me, really!). According to the writing, there are much greater risks to having chicken pox than vaccinating against it.