Recently several papers have been published related to entropy and evolution. According to Daniel F. Styer ("Entropy and evolution", Am. J. Phys 76, Nov 2008) and Emory F. Bunn ("Evolution and the second law of thermodynamics" Am. J. Phys 77, Oct 2009) entropy is decreasing due to evolution. Styer gives an estimate for the entropy change due to evolution, which is - 302 J/K per second. According to Styer and Bunn the decrease in entropy due to evolution is not in conflict with the 2nd law of thermodynamics because Earth is "constantly absorbing sunlight resulting in an enormous increase in entropy." Bunn writes: "...the rate of entropy increase due to the Earth's absorption of sunlight must be sufficient to account for the rate of entropy decrease required for the evolution of life (a negative quantity)." According to Annila et al. [See eg. Vivek Sharma and Arto Annila, "Natural process - Natural selection," Biophys. Chem. 127, 123-128 (2007) ; Ville Kaila and Arto Annila, "Natural selection for least action," Proc. R. Soc. A 464, 3055-3070 (2008); Salla Jaakkola, Sedeer El-Showk and Arto Annila, "The driving force behind genomic diversity," Biophys. Chem. 134, 232-238 (2008)] entropy is increasing during evolution. Annila et al. writes: "There is no need to explain the rise of orderly structures by invoking an exemption that entropy would decrease in a living system at the expense of its surroundings. Entropy is increasing in living systems as well by dispersal of energy." "The primitive chemical evolution took the direction dS/dt > 0, just as the sophisticated evolution does today." "It is possible to deduce the direction of evolution and ensuing overall distribution of the genomic entities by requiring that S will increase until dS/dt = 0." "The rate of entropy increase can be regarded as a universal fitness criterion of natural selection." So, we have peer-reviewed papers that are making totally opposite claims. According to Styer&Bunn entropy is decreasing (a negative change) due to evolution and according to Annila et al. entropy is increasing (a positive change) due to evolution. The negative change of entropy is also an important part of the argument presented by Styer&Bunn, because they use the increase in entropy due to Earth's absorption of sunlight to legitimate the claim that there is no conflict between evolution and the 2nd law of thermodynamics. And for Annila et al. entropy increase is also an important part of the argument: “...entropy increase can be regarded as a universal fitness criterion of natural selection”. How is this controversy possible? We have a situation equal to a situation where some peer-reviewed papers would claim that gravity is pulling masses together while some other peer-reviewed papers would claim that gravity is pushing masses apart. What kind of science is this? Should we believe in Styer & Bunn and say that evolution is decreasing entropy or should we believe in Annila et. al and say that evolution is increasing entropy?