"Cyanobacteria lived an easy life. They had no need to chase down prey: They floated at the boundary of their two “foods,” water and atmospheric carbon dioxide, and their energy supply was boundless. They divided and redivided and populations doubled and redoubled, all the while splitting water, fixing carbon dioxide into cell membranes, and popping out pinpricks of oxygen into the water. The numbers of cyanobacteria became incomprehensibly large, but know this: A single bacterium that starts dividing when the sun rises at six o’clock in the morning can, under perfect conditions, become a population of more than 34 billion by the time the sun sets. As the hundreds of millions of years passed, cyanobacteria became so abundant that they formed slimy, floating sheets in the open oceans. In shallow waters off the barren continents, the mats piled up and, interleaved with thin layers of mud and dead bacteria, formed pillows and domes and great reeflike structures called stromatolites that in shallow waters rose above the surface. If you had been able to scan the horizon 2.5 billion years ago, anything you saw that wasn’t water or barren rock was stromatolites. In deeper waters, the mats accumulated in cones and columns as much as a hundred feet high."
Although it's no “Disappearing Spoon,” “A Garden of Marvels” is a fairly entertaining book of a similar style, which is sure to appeal to most non-scientists trying to dig deeper into the subject of botany. Kassinger does incorporate a few too many clunky, hard to parse, and mostly extraneous parentheticals into her--also overly long--sentences. She also gets a bit lost in the weeds (sorry) when it comes to the real nitty gritty of organic chemistry, and specific chemical reactions in living things, to maintain the interest of a more casual reader who is easily overwhelmed by the faint suggestion of mathematics. Overall, though, for a determined reader, this book is full of genuinely very interesting potpourri on a subject that I think most people are surprisingly ignorant about. Really, most humans throughout time have been surprisingly ignorant about plants, particularly given their tremendous importance to our species’s survival, as food, medicine, building material, etc.; as Kassinger points out, even the rudiments of how plants interact with the world and sustain themselves were utterly mysterious until the Age of Enlightenment. I think that might be my biggest takeaway from this book: just how late, and how non-obvious, so much of the scientific understanding of everyday things can be!