http://scienceblogs.com/webeasties/2010/12/guest_post_arsenate-based_dna.php

http://www.slate.com/id/2276919/

http://blogs.discovermagazine.com/loom/2010/12/08/of-arsenic-and-aliens-what-the-critics-said/

http://rrresearch.blogspot.com/2010/12/arsenic-associated-bacteria-nasas.html

Another case of outstanding claims without solid proof.