Physics bans cloning: long known results from quantum mechanics ruling out the copying of a quantum particle have been extended to classical systems composed of many of these particles, because doing so disturbs the original system. But what that does that mean for biological cloning? Not a whole lot. Even if a genetically identical clone is made, once that clone starts growing, breathing, and living, it is subjected to different environmental pressures than the parent causing the clone to diverge from the original almost immediately. [via The Daily Grail]