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In today’s “need to know” stories, the Metropolitan Museum of Art releases 400,000 high-resolution digital images of pieces from its collection, an economist reminds us of the two types of inequality at work in society, and a sobering report on the cost of modern slavery.

An advocate for educational video games realizes that our kids might actually learn more from Civilization, Minecraft, Call of Duty and World of Warcraft.

America’s war in Afghanistan has been its longest, arguably most grueling, and yet for 13 years also strangely invisible. Sebastian Junger’s work helps bring it back into focus — now with a new documentary, Korengal. We spoke to him about the project.

TED Prize winner Sarah Parcak has learned some key lessons about parenthood from her work as an archaeologist. At the same time, becoming a parent has given her new insights into what her work means.

Now home to some 5,000 refugees, “The Jungle” in Calais is in essence a dead-end for migrants who are hoping to get through to the United Kingdom. Photographer Tomm Christiansen has documented real life there for months. He shares some of his startling photographs.

斑马的条纹、豹子的斑点、人类的手指，这些自然界中的奇妙图案究竟是如何形成的？答案竟然来自破解二战谜机密码的天才数学家阿兰·图灵。他在多年前便提出了解释生物形态形成的数学模型，为这一自然之谜提供了关键线索。

The brain in your head and the one in your gut are always exchanging info. But how do they do it? Neuroscientist Diego Bohórquez is trying to find out the answers.

作者自称对诗歌向来无感，却因观看Rives的TED演讲而深受触动。演讲中一段关于重拾旧情的故事，意外唤起她脑海中唯一铭记的一首诗——普里莫·莱维的《致我的朋友们》。她由此感悟到，人生中每一次相遇都在悄然塑造着我们，或许她对诗歌的欣赏也将就此开启。

This tiny republic has the most startups per person and the fastest broadband speeds, and it offers something no other country does: e-residency. Estonia is aiming to create the ideal information society. Technology thinker and entrepreneur Andrew Keen goes there to find out how it works.

Bright, vivid color really does give us more energy — and that’s just one of the things designer Ingrid Fetell Lee discovered in her 10-year search for the sources of joy.