One of the blogs I keep an eye on is erv, Endogenous RetroViruses, by Abbie Smith. Not the usual language you'll see here (some over PG-13), and certainly different style (Abbie doesn't believe in the ', for instance). But for some discussion of biology, particular parts involving viruses and especially endogenous retroviruses (surprise), it's a good place to go.
I'll note that back when I was thinking about blogging, Abbie was one of the people who gave me some ideas on approach.
Some articles to take a look at for a sample of the blog:
What is normal, and how it matters in examining bees
Open Access Publishing -- and some limits
How immunization works
Antivaccinationism and death by measles
AIDS and CD4+ T-cells
Blood groups and viruses
Antibodies and dengue
Pursuing science and results
Zinc and the common cold
The Timetree of life
Scientists being slandered
Scientists and media
Wait. That’s the Same Comet?
11 hours ago