Bacteria that incorporate arsenic into their DNA

Choose your news source for this story:<p><a href="http://news.ycombinator.com/item?id=1962894" rel="nofollow">http://news.ycombinator.com/item?id=1962894</a> - go.com<p><a href="http://news.ycombinator.com/item?id=1962893" rel="nofollow">http://news.ycombinator.com/item?id=1962893</a> - nytimes.com<p><a href="http://news.ycombinator.com/item?id=1962846" rel="nofollow">http://news.ycombinator.com/item?id=1962846</a> - nature.com<p><a href="http://news.ycombinator.com/item?id=1962696" rel="nofollow">http://news.ycombinator.com/item?id=1962696</a> - longislandpress.com<p><a href="http://news.ycombinator.com/item?id=1962386" rel="nofollow">http://news.ycombinator.com/item?id=1962386</a> - gizmodo.com<p><a href="http://news.ycombinator.com/item?id=1962200" rel="nofollow">http://news.ycombinator.com/item?id=1962200</a> - gizmodo.com<p><a href="http://news.ycombinator.com/item?id=1962110" rel="nofollow">http://news.ycombinator.com/item?id=1962110</a> - google.com<p><a href="http://news.ycombinator.com/item?id=1957823" rel="nofollow">http://news.ycombinator.com/item?id=1957823</a> - skymania.com<p><a href="http://news.ycombinator.com/item?id=1953228" rel="nofollow">http://news.ycombinator.com/item?id=1953228</a> - kottke.org