Narrow Edge (eBook)

Thousands of ravenous tiny shorebirds race along the water's edge of Delaware Bay, feasting on pin-sized horseshoe-crab eggs. Fueled by millions of eggs, the migrating red knots fly on. When they arrive at last in their arctic breeding grounds, they will have completed a near-miraculous 9,000-mile journey that began in Tierra del Fuego.

Deborah Cramer followed these knots, whose numbers have declined by 75 percent, on their extraordinary odyssey from one end of the earth to the other—from an isolated beach at the tip of South America all the way to the icy tundra. In her firsthand account, she explores how diminishing a single stopover can compromise the birds' entire journey, and how the loss of horseshoe crabs—ancient animals that come ashore but once a year—threatens not only the survival of red knots but also human well-being: the unparalleled ability of horseshoe-crab blood to detect harmful bacteria in vaccines, medical devices, and intravenous drugs safeguards human health. Cramer offers unique insight into how, on an increasingly fragile and congested shore, the lives of red knots, horseshoe crabs, and humans are intertwined. She eloquently portrays the tenacity of small birds and the courage of many people who, bird by bird and beach by beach, keep red knots flying.

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In a volume as urgent and eloquent as Rachel Carson’s Silent Spring, this book—winner of the Southern Environmental Law Center's 2016 Reed Environmental Writing Award in the book category—reveals how the health and well-being of a tiny bird and an ancient crab mirrors our own Winner of the 2016 Rachel Carson Environment Book Award given by the Society of Environmental Journalists  Each year, red knots, sandpipers weighing no more than a coffee cup, fly a near-miraculous 19,000 miles from the tip of South America to their nesting grounds in the Arctic and back. Along the way, they double their weight by gorging on millions of tiny horseshoe crab eggs. Horseshoe crabs, ancient animals that come ashore but once a year, are vital to humans, too: their blue blood safeguards our health. Now, the rufa red knot, newly listed as threatened under the Endangered Species Act, will likely face extinction in the foreseeable future across its entire range, 40 states and 27 countries. The first United States bird listed because global warming imperils its existence, it will not be the last: the red knot is the twenty-first century’s “canary in the coal mine.” Logging thousands of miles following the knots, shivering with the birds out on the snowy tundra, tracking them down in bug-infested marshes, Cramer vividly portrays what’s at stake for millions of shorebirds and hundreds of millions of people living at the sea edge. The Narrow Edge offers an uplifting portrait of the tenacity of tiny birds and of the many people who, on the sea edge we all share, keep knots flying and offer them safe harbor. Winner of the 2016 National Academies Communications Award for best book that honors the best in science communications. Sponsored by the Keck Futures Initiative—a program of the National Academies of Sciences, Engineering, and Medicine, with the support of the W.M. Keck Foundation