The Entropy of the Universe never decreases, and in fact tends to increase..

https://journals.aps.org/pre/abstract/10.1103/PhysRevE.82.011143

http://iopscience.iop.org/article/10.1088/1742-5468/2010/10/P10009/meta

https://journals.aps.org/pre/abstract/10.1103/PhysRevE.82.011144

http://iopscience.iop.org/article/10.1088/1367-2630/11/7/073008/meta

http://dornsife.usc.edu/david-wallace/papers-sm/

See Irreversibility