Davide Pisani is a Professor of Phylogenomics at the Schools of Biological & Earth Sciences, University of Bristol. His research is at the interface of molecular and organismal biology. He is interested in the application of comparative genomics to investigate key problems in organismal evolution, and the combination of genomic and paleontological information to study evolution. He is interested in the early Earth, the coevolution of life and Earth, the origin and early diversification of cellular life and eukaryogenesis. He is interested in major evolutionary transitions and he has recently been working at developing a timescale for life on Earth, the origin of animals and the phylogeny of non-bilaterian animals (sponges, jellifishes, comb jellies, corals and the elusive placozoans). He is interested in the evolution of the Ecdysozoa (the moulting animals), particularly the tardigrades (water bears), onychophora (velvet worms) and Arthropoda (insects, millipedes, crustaceans, spiders etc). He uses Ecdysozoa as a model to study patterns and processes of colonisation of land. He is intereststed in the evolution of sensory functions (particularly chemoreception and life reception), as detecting these envirounmental cues is key for a diversity of life forms (both unicellular and multicellular). Finally, He is interested in the study and development of phylogenetic-based methods of analyses, and he has been developing and implementing in software supertree reconstruction methods. He has an interest in Astrobiology and he has been collaborating with the NASA Astrobiology institute from 2002 to 2018.