
The very first forms of life appeared on Earth four billion years ago. From single-celled organisms, to dinosaurs, to mammals, & finally to humans, Evolving Planet traces the path of life that has been constantly evolving. Long before all the life we see today ever came to be-from the lions of Africa, to the ants of the rainforests, to the bacteria that thrive in the depths of the ocean-countless other life-forms once swam, crawled, flew, or bloomed on our planet. The book provides an overview of Earth