Looking For Blogroll Suggestions

Every now and then I pay attention to the layout of this blog.

Many of the links in my blogroll are stale, and I plan on migrating them to a permanent "page" of stale science blogs.

This would also be a natural time for me to add new blogs or webpages to my blogroll at the same time.

I'd welcome any suggestions in the comments for active (at least a few posts a year) blogs or reference webpages that regularly address the subject matter of this blog.