Think Again

NELSON ALMEIDA/AFP/Getty Images, TED ALJIBE/AFP/Getty Images,  SAJJAD HUSSAIN/AFP/Getty Images, PIUS UTOMI EKPEI/AFP/Getty Images, NELSON ALMEIDA/AFP/Getty Images, BAY ISMOYO/AFP/Getty Images

10 Million Sardines in a Sea of Skyscrapers

How sprawling megacities -- from Lagos to Mumbai -- might just save the world.

Top image: Illustration by Maayan Pearl; photo by Joel Simon/Getty Images

Think Again: Climate Treaties

Why the glacial pace of climate diplomacy isn't ruining the planet.

Photos, top to bottom: VANDERLEI ALMEIDA/AFP/Getty Images; MIGUEL MEDINA/AFP/Getty Images; MIGUEL MEDINA/AFP/Getty Images; VANDERLEI ALMEIDA/AFP/Getty Images; World War II-era posters discouraging soldiers from purchasing sex; Andrew Caballero-Reynolds/AFP/GettyImages

Think Again: Prostitution

Why zero tolerance makes for bad policy on world's oldest profession.

MICHEL CLEMENT,DANIEL JANIN/AFP/Getty Images

Think Again: Nelson Mandela

The man behind the myth -- and the tenuous future of South Africa.

Photos: Courtesy of ICE, Jesus Alcazar/AFP/Getty Images, Sandy Huffaker/Getty Images, Jesus Alcazar/AFP/Getty Images, AFP/Getty Images, YURI CORTEZ/AFP/GettyImages, Ronaldo Schemidt/AFP/GettyImages

Think Again: Mexican Drug Cartels

They aren't just about Mexico or drugs anymore.

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Think Again: American Nuclear Disarmament

A smaller atomic arsenal isn't just wishful thinking -- it's bad strategy.

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Think Again: Working Women

Why American women are better off than the lean-inners and have-it-allers realize.

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Think Again: A Nuclear Iran

Why it won’t be the end of the world if the mullahs get the bomb.

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Pakistan’s Rollercoaster Election

Is this a generationally significant change of power, or more of the same dysfunction?

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Think Again: Big Data

Why the rise of machines isn't all it's cracked up to be.

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Think Again: European Decline

Sure, it may seem as if Europe is down and out. But things are far, far better than they look.

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Think Again: Austerity

The big spenders are wrong: Maintaining sustainable budgets is essential to economic growth.

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Think Again: Margaret Thatcher

The former British prime minister was a transformative politician. But her public image as an unblinking Iron Lady fails to do justice to her complexity.

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Think Again: North Korea

North Korea is a lot more dangerous than you think, but that doesn't mean that Kim Jong Un is insane.

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Think Again: The Pentagon

The military's Chicken Littles want you to think the sky is falling. Don't believe them: America has never been safer.

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Global Thinkers 2015 Issue Cover