A (Very) Short History of Life on Earth: 4.6 Billion Years in 12 Pithy Chapters, by Henry Gee, is an interesting little book on the history of life on Earth. Of course, a small book such as this will not, in any way, exhaustively cover any of the topics or lifeforms contained within. It does, however, give a very approachable overview of the subject, and with an extensive source list, and further reading list within, it also gives the reader next steps if they wish to drill down on any one topic. This book examines life as we know it so far, from its earliest theorized state, with cells beginning to cooperate and form more complex structures, to the advent of single cell, and multicellular life, and its slow evolution into more complex and specialized forms. The pursuit of nutrients, and the need to survive both the harsh radiation from the sun, and the changing climate of the Earth, led to numerous innovations for protection, efficient use and storage of energy, and reproduction, amongst other needs. Gee has captivated my attention with this book, giving brief tidbits of information on life from the earliest points in their history, up to the present day.
From a geological perspective, humanity is but a blip on the map, and may not even make as meaningful an impact on the Earth as much smaller, and more simple forms of life. The complexities of life, whether it be the carboniferous era "forests" of old, the Lystrosaurus, which for millions of years roamed the Earth as the dominant species on the planet, the evolution of birds from reptilians, and the interesting menagerie of life in the ocean, are all presented well. The fascinating life of our distant ancestors, Homo Erectus is also fascinating, as are the many and varied human-like cousins that once inhabited the Earth. This book also shows that humans, as the last of their species, and almost the last of the monkeys in general, may not survive long. Our cousins in the animal kingdom are long gone, from human predation, possibly, but much more likely from their inability to survive a changing climate. This will be our greatest challenge, and one we may not be able to survive at all, if the history of life on Earth has any bearing on it. Life will prevail for hundreds of millions of years, until the eventual death of the Earth itself, barring any cataclysmic events, but humans will almost certainly not be around to see it.