About this item

Meet the science experts who study specimens of extreme longevity in both the plant and animal kingdoms, such as the 80,000-year-old root system of Pando (a colony of male quaking aspens) , 11,000-year-old deep-sea sponges, and 400-year-old sharks. Learn about technologies used to determine age and longevity, including DNA sampling, growth rings, and radiocarbon dating. See how scientists located these long-lived species were and why and how they resist disease and aging. And delve into how scientists are using what they know about aged plants and animals to research how we can promote longevity in humans.



About the Author

Karen Latchana Kenney

My favorite book as a child was an educational book titled I Want to Be a Reporter. It was about the job of a reporter and described the skills needed to tell stories in writing. I asked my mom to read it to me every night. Since discovering that book, I have loved the idea of writing for a living. Now I get to write about all kinds of topics . . . from the life of one of the greatest scientists of all time, Stephen Hawking, to the ancient Aztec civilization. I have been writing and editing for more than ten years, for all grade levels.



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