Switching from writing to reading today, and / or organizing my research notes, I picked up a book I'd like to read (of about a dozen) and at random opened it up. The book is Tree, A Life Story by David Suzuki and Wayne Grady (it follows the 500 year life of one douglas fir); the page is 69 (ewww).
The topic is Donald Culross Peattie, discussing a part from his book Flowering Earth, in which Mr. DCP recalls how, as a student of botany at Harvard, he extracted chlorophyll and noticed its resemblance to human / animal blood.
"Using spectrum analysis, Peattie learned that the constituents of a chlorophyll molecule were eerily familiar. 'To me, a botanist's apprentice, a future naturalist,' he writes, 'there was just one fact to quicken the pulse. That fact is the close similarity between cholorphyll and hemoglobin, the essence of our blood.' This is no fanciful comparison, but a literal, scientific analogy: 'The one significant difference in the two structural formulas is this: that the hub of every hemoglobin molecule is one atom of iron, while in chlorophyll it is one atom of magnesium.' Just as chlorophyll is green because magnesium absorbs all but the green light spectrum, blood is red because iron absorbs all but the red. Chlorophyll is green blood. It is designed to capture light; blood is designed to capture oxygen."
I appreciate being blown out of the water. You bet your bottom dollar it's going in my book.