Comment on 'Investigations into the impact of astronomical phenomena on the terrestrial biosphere and climate' (arXiv:1505.07856 [astro-ph.EP]) by Fabo Feng

This work by Feng and papers which published its conclusions do not cite nor do they deal with objections by the author published in 2013-2014. There are many fundamental problems. We will summarize here the principal problems, as based on Melott and Bambach (2013, 2014) which render irrelevant most of the work presented by Feng. Feng did not cite or deal with either of these papers, nor include the missing, relevant work Melott and Bambach (2010). We restrict our attention to the question of the detection of periodicity. Readers are referred to Melott and Bambach (2013, 2014) for fuller detailed discussion of the problems.