Learning from Environmental Conservation's Successes and Failures

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Humpback whales in the singing position.
From and

A new study finds that more than 50 species are at risk for extinction each year. Environmental conservation programs have succeeded in preserving wildlife in some areas, including humpback whales, white rhinos and dozens of others. Why do some conservation efforts succeed while some fail?

Dr. Doug Inkley, a senior scientist at the National Wildlife Federation, joins us to discuss these findings and what more needs to be done to preserve biodiversity.