Found in Botswana, the Lesedi la Rona diamond is up for auction and valued at $70 million. Seth Wenig/AP hide caption

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Seth Wenig/AP

When Botswana Sells Its Big Diamond, Who Will Benefit?

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Lariat Alhassan had lots of great paint to sell but no office where she could meet clients. And then she heard an ad on the radio that seemed too good to be true. Courtesy of Lariat Alhassan hide caption

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Courtesy of Lariat Alhassan

Her Paint Business Was Failing. Would A $65K Gift Save The Day?

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Nigerian billionaire Tony Elumelu hopes to create job opportunities by investing in African startups. Above: Elumelu, center right, speaks at an entrepreneurship event in July 2015. Courtesy of Tony Elumelu Foundation hide caption

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Courtesy of Tony Elumelu Foundation

To End Poverty, Billionaire Gives $10,000 To 10,000 Entrepreneurs

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A coal mound stands outside a Kentucky Utilities Co. station. Bloomberg/Bloomberg via Getty Images hide caption

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Bloomberg/Bloomberg via Getty Images

India To U.S.: Cut Back On Your Consumption!

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Syrians arriving on the Greek island of Lesbos are part of the largest flow of refugees since World War II. The challenge for the U.N. is to find the funds and political will to address refugee needs while tackling the newly ratified Sustainable Development Goals. Angelos Tzortzinis/AFP/Getty Images hide caption

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Angelos Tzortzinis/AFP/Getty Images

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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Secretary-General Ban Ki-moon (right, with blue necktie) arrives in Addis Ababa, Ethiopia, for the International Conference on Financing for Development. Courtesy of UN Photo/Eskinder Debebe hide caption

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Courtesy of UN Photo/Eskinder Debebe

The World Could Wipe Out Extreme Poverty By 2030. There's Just One Catch

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