African forest elephants stampede in the Central African Republic jungle. Courtesy of Cornell Lab or Ornithology hide caption

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Courtesy of Cornell Lab or Ornithology

To Decode Elephant Conversation, You Must Feel The Jungle Rumble

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Baby elephants are a welcome sight in Zakouma National Park in Chad. Thanks to stepped-up enforcement, the park hasn't lost an elephant to poachers since 2012. Without the stress of poaching, the elephants started breeding again and more than 40 calves have been born. Brent Stirton/Reportage by Getty Images for National Geographic Magazine hide caption

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Brent Stirton/Reportage by Getty Images for National Geographic Magazine

GPS Trackers In Fake Elephant Tusks Reveal Ivory Smuggling Route

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Mammoths had a distinctive version of a gene known to play a role in sensing outside temperature, moderating the biology of fat and regulating hair growth. That bit of DNA likely helped mammoths thrive in cold weather, scientists say. Courtesy of Giant Screen Films, 2012 D3D Ice Age, LLC/Penn State University hide caption

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Courtesy of Giant Screen Films, 2012 D3D Ice Age, LLC/Penn State University

Checking DNA Against Elephants Hints At How Mammoths Got Woolly

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A Maasai boy and his dog, near the skeleton of an elephant killed by poachers outside of Arusha, Tanzania, in 2013. Jason Straziuso/AP hide caption

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Jason Straziuso/AP

DNA Tracking Of Ivory Helps Biologists Find Poaching Hotspots

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Elephant acts at Ringling Bros. and Barnum & Bailey Circus will be phased out by 2018, the circus' parent company said today. The elephants will retire to a conservation center in Polk City, Fla. Tamika Moore/AL.com/Landov hide caption

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Tamika Moore/AL.com/Landov

Louis E. Pratt, master ivory cutter for Pratt, Read & Co., shows off eight ivory tusks, April 1, 1955. Courtesy of Deep River Historical Society hide caption

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Courtesy of Deep River Historical Society

Elephant Slaughter, African Slavery And America's Pianos

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An elephant in Kenya's Tsavo East National Park, home to some 13,000 of these remarkable animals. Ivan Lieman/AFP/Getty Images hide caption

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Ivan Lieman/AFP/Getty Images

An elephant at the Emmen, Netherlands, zoo stands at the edge of a ditch in 2009, a day after another elephant fell into the ditch and died. Olaf Kraak/AFP/Getty Images hide caption

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Olaf Kraak/AFP/Getty Images

The arrival of African elephants at a Tucson zoo prompted a call for the zoo's fans to contribute leafy snacks. This file photo shows African elephants at the Pittsburgh Zoo & PPG Aquarium in 2011. Gene J. Puskar/AP hide caption

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Gene J. Puskar/AP

Zoo Tells City: Please Feed The Animals

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A family of elephants in Kenya's Maasai Mara game reserve. Tony Karumba/AFP/Getty Images hide caption

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Tony Karumba/AFP/Getty Images