Arsenic study

In the wake of the NASA excitement over the new arsenic study, and my promise to give a detailed review of the paper itself, I have recruited a colleague with strong opinons about the work, a solid chemistry and microbiology background, and "Dr." in front of his name to share his analysis. I will be posting have posted my personal and less-technical take on the whole thing soon, so stay tuned as well. Dr. Alex Bradley uses modern geochemistry and microbiology tools to study the evolution of life and Earth. He has the following to say about the paper. There's been a lot of hype around the…