Who are the best science writers working right now?

I’m still re-acclimating to New Jersey (I think northern Utah suits me better) so blogging has been a little slow. I have a spate of book reviews and other posts in the works, but for the moment I wanted to ask my remaining readership a question. Who are your favorite science writers working today and why? (I have no doubt Carl Zimmer will be a top choice.) Additionally, are there any up-and-coming science writers you think the rest of us should be watching? (My pick would be Ed Yong for this one.) Have at it in the comments.

[And many thanks to T. Ryan Gregory for placing me on a list of “Good Science Writers.” I don’t think I deserve the honor, but I certainly appreciate the praise.]