In this book we present over 500 photographs that as a collective totality conclusively proves there is life on Mars. These include photos of Martian algae, microbial mats, stromatolites, lichens, fungi, fungus, fossils; and sequential images documenting that Martian organisms are growing out of the ground, increasing in size, moving to new locations; and that fungi are engaging in reproductive behavior by shedding spores that produce embryonic fungus. This conclusive evidence represents the collective investigative efforts of several teams of scientific experts, 24 scientists in total, the names of whom are listed in the publications cited in the Reference section, each of which discusses and provides scholarly references for the conclusions reached. This document consists almost entirely of photos and is arranged in 14 sections. (1) Algae and Microbial Mats; (2) Stromatolites; (3) Algae & Lichen-Algae; (4) Algae Fruiting Bodies and Networks of Calcium Oxalate; (5) Dimpled Lichens & Algae Fruiting Bodies; (6) Photosynthesis and Gas Bubbles (7) Vast Colonies of Rock-Dwelling Lichens; (8) Fungal Puffballs (vs the Hematite Hoax); (9) Fungus, Spores, Reproduction, Embryonic Fungi; (10) Colonies Of Arctic Algae, Fungus, Mold, Lichens; (11) Growth, Movement, Behavior; (12) Fungus and Bacteria Growth on the Rovers; (13) Lichen Puffball Calcium Oxalate Fossils; (14) Fossils: Algae, Tube Worms, "Ediacarans," Metazoans. (15) Tube Worms, (16) Crustaceans? We conclude that the visual evidence is obvious and in totality should be considered conclusive: There is life on Mars.