rpiquepa writes "Before answering this question, what on earth is X-Large DNA? This news release from Stanford University says that scientists there have created a molecule of DNA wider than the ones found in living creatures in our world. They "have created an expanded molecule of DNA with a double helix wider than any found in nature. Besides being more heat resistant than natural DNA, the new version glows in the dark — a property that could prove useful in detecting genetic defects in humans." You also can read "DNA, Now in XXX-Large," from Wired News, which tells you that xDNA could be a key to find life on other planets. This summary contains more details about what is "expanded DNA," or xDNA."