A pangolin carries its baby at a zoo in Bali, Indonesia. Delegates at a U.N. wildlife conference have voted to ban commercial trade in all eight species of pangolin. Firdia Lisnawati/AP hide caption

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Firdia Lisnawati/AP

A humpback whale breaches Aug. 6 close to a whale-watching boat off the coast of Long Beach, Calif. Most humpbacks off the Western U.S. remain endangered, but 9 of 13 populations worldwide are considered stable enough to remove the designation, it was announced Sept. 6. Nick Ut/AP hide caption

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Nick Ut/AP

A Santa Catalina Island fox pup dashes into the wilderness after being released on Santa Catalina Island off the coast of Southern California. The Catalina Island fox was one of the world's most endangered species, but it has been upgraded to "threatened." Kevork Djansezian/AP hide caption

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Kevork Djansezian/AP

A rhino wakes up after its horn was trimmed at John Hume's Rhino Ranch in Klerksdorp, South Africa, on Feb. 3. South Africa's highest court is preparing to decide whether to uphold the country's domestic ban on trading rhino horn. John Hume is a private rhino owner and breeder who advocates for legalizing trade. Mujahid Safodien /AFP/Getty Images hide caption

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Mujahid Safodien /AFP/Getty Images

If South Africa Lifts The Ban On Trading Rhino Horns, Will Rhinos Benefit?

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Scientists in California are turning to big data to help save the red-legged frog, which is listed as threatened under the Endangered Species Act. Gary Kittleson hide caption

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Gary Kittleson

Using Algorithms To Catch The Sounds Of Endangered Frogs

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For 15 years, biologists in single-person, ultralight aircraft would each lead an experimental flock of young whooping cranes from Wisconsin to a winter home in Florida. But not anymore. Dave Umberger/AP hide caption

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Dave Umberger/AP

To Make A Wild Comeback, Cranes Need More Than Flying Lessons

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Green when young, and about the size of an adult human's hand when full-grown, Dryococelus australis is more commonly known as the Lord Howe Island stick insect, or the tree lobster. Courtesy of Rohan Cleave/Melbourne Zoo hide caption

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Courtesy of Rohan Cleave/Melbourne Zoo

Love Giant Insects? Meet The Tree Lobster, Back From The Brink

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Bull trout are running out of time in Montana as their traditional waters heat up, biologists say. By moving more than 100 fish to higher elevations, fisheries scientists hope to save the species by seeding a new population in waters that will stay cooler longer. Jim Mogen/USFWS hide caption

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Jim Mogen/USFWS

Scientists Try Radical Move To Save Bull Trout From A Warming Climate

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A black-footed ferret looks out of a crate during a release of 30 of the animals at a former toxic waste site, now a wildlife refuge in suburban Denver. David Zalubowski/AP hide caption

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David Zalubowski/AP

A pangolin is released into the wild by officials at a conservation forest in Indonesia in 2013. The animal was among 128 pangolins confiscated by customs officers from a smuggler's boat off Sumatra. Jefri Tarigan/AP hide caption

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Jefri Tarigan/AP

The World's Most Trafficked Mammal Is One You May Never Have Heard Of

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In this image taken from a November 2012 video, Cecil the lion is shown in Hwange National Park in Zimbabwe. Paula French via AP hide caption

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Paula French via AP

Death Of Beloved Lion Heats Up Criticism Of Big Game Hunting

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Cecil the lion is shown walking in Zimbabwe's Hwange National Park in a YouTube video from July 9, 2015. Credit: Bryan Orford Bryan Orford/YouTube hide caption

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Bryan Orford/YouTube

Investigation Underway Into Killing Of Cecil, Zimbabwe's Best Known Lion

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