 There have been many other metagenomics studies conducted since and there is little point in listing them here, as the list is growing by the month. One aspect of the ongoing research that is important to point out, however, is that the projects are becoming increasingly ambitious. The trend now is not just to have an integrated view on the genomes but to combine metagenomics with other techniques such as metabolomics (the assay of small molecules present in a system), metatranscriptomics (the analysis of all RNA transcripts of a community of microbes) and viromics (the analysis of all the viral genomes present in the system of interest) (see Turnbaugh &amp; Gordon 2008; Bikel et al. 2015). In a sense the field is moving towards a highly integrated meta-Metagenomics approach (Dupré &amp; O’Malley (2007) talk of “metaorganismal metagenomics”). This is also in line with the general trend towards big-data and discovery-based approaches in the life sciences (Ankeny &amp; Leonelli 2015; Dolinski &amp; Troyanskaya 2015; Leonelli 2014, 2016).