This book is about the impact humans have had on the world, and perhaps more accurately, it’s about how we pinpoint when that impact really began and whether we should consider the human impact to have started a new geological age for the Earth. There’s a lot of interesting stuff here about exactly how humans have changed the world: the Columbian exchange which is leading to the homogenisation of ecosystems, and climate change, of course, but also the deeper impacts to the carbon and nitrogen cycles.
There’s also a lot of rather tedious discussion of how exactly the committees to define geological time are set up, and that I could have done without. I don’t mind some information about that, but I don’t need to hear about the endless infighting and bureaucracy created in such detail! I’m actually interested in how humans have impacted the planet, not the process by which we decide whether to commemorate that by naming a geological era the Anthropocene.
There’s several instances of really bad editing in this volume, too — typos, sentences which don’t quite make sense, etc — which gives it quite a careless overall effect. Some useful information and theories, and some stuff I didn’t know from elsewhere, though!