Two important notes for today - the full link round-up, as per usual, will come over the weekend.
First, the meta-aggregator to end all aggregators. Go check out scienceblogging.org - a fantastic tool built by Anton Zuiker, Blogfather Bora, and Dave Munger. It's not perfect, but the whole thing was put together in just the last few days. So go check it out, and leave suggestions and recommendations on the site blog. Read about its origins and philosophy here.
Second, the first edition of the Carnal Carnival is up at A Blog Around The Clock, and the theme is poop. Also, make sure you're following the official twitter account @carnal_carnival so you can get updates. To see a list of upcoming or previous hosts and themes, go check out the carnival blog and click on the the appropriate tab.