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There really is a flag design rule book, and radio host Roman Mars abides by its principles religiously. Well, perhaps not all the time. Some flags are apparently too excellent to obey the rules …

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For women in the developing world, the focus is on surviving everyday violence, assault and rape. Gary Haugen argues that until we acknowledge the pervasive nature of such violence, we’ll never change anything. He shares five shocking stats he hopes might help us pay closer attention.

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British psychologist Elizabeth Stokoe studies the patterns in talk that most of us don’t even notice. She explains how her research can be used to train people to interact more effectively.

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Think about everyday services, and what comes to mind? Probably practical matters: housing, food, health, education. Artist Theaster Gates wants to add a new item to the list. He makes the case for why, really, beauty is the most important basic service.

Pluto and its largest moon, Charon, could be considered a double planet. The balance point between them is between them in space, not within Pluto, so they're orbiting together around a point in space. This is our first mission to a double planet.

Planetary scientist Alan Stern explains why he believes new close-up pictures of Pluto prove beyond doubt that it should have its planet status reinstated. Also, close-up photographs of Pluto!

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British designer and architect Thomas Heatherwick describes how to bring a human scale and whimsical sensibility to urban life, to create a fabulous future fit for us all.

Wheel tracks mark Curiosity’s path over a Martian dune. 

Photo courtesy NASA/JPL-Caltech/MSSS

Author Stephen Petranek makes the case that humans will live on Mars in the not-too-distant future. He explains how and when this might happen — and what risks those who head there first might face.