In the news (from ScienceDaily): Research conducted [by Prof Ron Naaman of the Weizmann Institute of Science in Israel] together with scientists in Germany, which appeared recently in Science, shows that a biological molecule – DNA – can discern between quantum states known as spin. … The biological molecules reacted strongly with the electrons carrying one of those spins, and hardly at all with the others.
Comment: The significance of these results goes beyond the boundaries of experimental physics. The issue here is that at the quantum level, the quality of quantum entanglement gets expressed between the particles, and the particles preserve it even if they end up at opposite ends of the galaxy. If the spin of one particle changes, it simultaneously changes in the other one as well, and this effectively turns the universe into a single, connected system.