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Thank you, Rachel
by Jack Kittredge
Julie and I are reading “The Sea Around Us”, the short 1951 Rachel Carson book that preceded her award-winning 1962 blockbuster “Silent Spring”. Halfway into this book I understand why Carson won such deep appreciation as a writer.
It is not because she tells you facts that are new. She just can open your eyes to see how amazing are the facts you already know. On almost every page one of us has to stop and comment, gratefully, for the illumination given by a just-read paragraph.
Take time. Everyone knows that geologic time is immense. But her calm description of the buckling of the earth’s heat-driven floating crust, its thrusting up of huge mountains, which eventually the slow rain and glacier scraping erode into sand and back to the sea, gives you a feeling for the scale involved — a range as high as the Himalayas can have come and gone a dozen times this way since the earth was formed.
Or look at the primacy of the sea. For land creatures like us it is perhaps unsettling, but when the earth cools sufficiently to stop throwing up mountains and the continents eventually erode the final time, the 70% of earth’s surface that is water will become 100%.
Until then the trapping or release of water from miles-thick glaciers drive shifting coastlines which flood or rise up, in either case isolating countless species of creatures to evolve in new directions, have their moment in life and then again change or die.
And think about the infestation with life of remote islands like Hawaii. Raised by hot spot eruptions through several miles of sea into cones of naked rock, can you imagine how difficult it has been to build soil from the accumulation of organic matter as floating detritus drifts by, or bird droppings descend? Then again how about trapping living organisms there, thousands of miles from any source, in sufficient quantities to breed, diversify and thrive?
Even gravity plays a role. Ages of freezing rain weigh down high plateaus, then melted ice and erosion run to the sea releasing that enormous weight and the plastic crust responds. Elevations shift, the heights become inundated and lake bottoms become limestone cliffs.
We can hardly await the second half of the book. Carson’s appeal is being both an excellent scientist and a first-class story-teller. Of course her topic is huge, and for strikingly short-lived observers like ourselves it is a humbling read. But that may be just what we need to see things a little more fully.
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