If you haven't seen the announcement yet, today the Public Library of Science (PLoS) launched a new network of science blogs called PLoS Blogs. It's an impressive effort, and I particularly like the mix of contributors:
PLoS Blogs is different from other blogging networks, because it includes an equal mix of science journalists and scientists. We’re excited to be welcoming our new bloggers, including Pulitzer Prize winner Deborah Blum to the network.
PLoS itself was founded in 2000 by Stanford biochemistry professor Patrick Brown, MD, PhD; Michael Eisen, PhD; and Harold Varmus, MD.