Resilient ravens show rare species reversal

According to the law of entropy, change occurs in only one direction, writes Richard Collins.

You can’t get coal back from cinders, nor is it any use crying over spilt milk. Everything is moving relentlessly towards a state of total disorder. The universe will cool to a uniform temperature everywhere. Sometime, in the far distant future, great heaps of amorphous ‘stuff’, drifting silently in pitch-black darkness, will be all that remains of our world.