The latest issue of Astrobiology (Volume 7 Number 4 August 2007) has some interesting papers.

For those who don't have access to Astrobiology, note the publishers are offering free access (opens PDF in separate window) to the Beegle et al. paper on NASA's 2016 Astrobiology Field Laboratory concept.

I hope the homophone of the lead author's last name doesn't presage the outcome