All life on Earth - at least, as we knew it - has the same "building blocks" from which to begin: DNA (and RNA), comprised of carbon, oxygen, hydrogen, nitrogen, sulfur and phosphorus. But these bacteria, discovered in Mono Lake, California (a highly toxic environment), have no phosphorus in their DNA. None. It's all been replaced with arsenic. They are, in short, completely and fundamentally different from the rest of life on the planet. And that has tremendous implications. To everything.
10 hours ago