Laura Madsen’s Reviews > When the Earth Was Green: Plants, Animals, and Evolution's Greatest Romance > Status Update

“…that most simple but challenging evolutionary outcome—good enough.”

Cute vignette of a 700-pound saber tooth cat getting high on catnip.

“Evolution excels at refashioning what already exists into new biological possibilities.”

On the fateful event when a single cell incorporated a cyanobacterium, which later developed into a chloroplast: “Perhaps a prisoner, perhaps a roommate, the photosynthesizing cell was stuck inside of its host.”