Physicists turn back time – a bit

“Man! If only I could turn back time!” According to an article in the science magazine Scientific Reports, physicists have apparently succeeded in doing just that – at least in the quantum realm and with very small particles. However, it’s still impossible to manipulate the wheel of time, because the Second Law of Thermodynamics distinguishes between the past and the future.

Most other physical laws are reversible. But when the Second Law comes into play, nature behaves very stubbornly, and e...