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The great American bison

They show up on old nickels, on the backs of quarters and on flags. They surface in burgers and jerky, in the logos of sports teams and in the names of towns. But how much do you know about this quintessential American animal?

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Kate and Will’s big day

Here’s a round-up of what you need to know in the lead up to Kate and Will’s big day.

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Omega-3s

Touted regularly for their supposed health benefits, what are these magical fats and what do they really do?

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Emperor Akihito

Unlike his predecessors, Japan’s emperor speaks the people’s language and is married to a commoner. He also knows a lot about fish.

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The ‘Supermoon’

The moon will be really, really big on Saturday in a much-hyped event that some say causes natural disasters. Astronomers say: Nah.

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Libya’s Moammar Gadhafi

Who is this grandstanding, brooch-wearing king of kings? Here are five things you need to know.

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The State of the Union

President Obama will deliver his second State of the Union speech this evening. Here are five things you need to know about the annual address.

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Nanofoods

Ever wish the taste of delicious food would linger? Tiny engineered particles could make that possible, or tell you when food is spoiled, deliver medication and change the color of your cake.

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Venus, our eccentric sister

This week, Venus will reach its greatest distance from the sun in our sky before beginning its “descent” into what Sumerian myths described as the underworld. Here are five things you need to know about the planet.

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Lunar eclipses

Tomorrow’s eclipse is part of a series that began more than 1,000 years ago. Here are a few things to ponder if you’re up in the wee hours staring into the sky.

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Liu Xiaobo

It’s been 65 years since the chair sat empty. The last time a detained Nobel Peace Prize laureate failed to be formally represented by anyone at the awards gala was when Nazi Germany barred pacifist Carl von Ossietzky from attending in 1935.

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Vitamin D

Vitamin D is good for your bones. That much we know. But how much do you need? We asked the experts about a new report that has heightened the debate.

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Cholera

The closest most of us have come to cholera is through reading the works of Gabriel Garcia Marquez. But an outbreak Haiti has killed over 1000 people and will likely worsen.

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Halloween

Self-expression through pumpkins, becoming “Jersey Shore,” and the new, improved witch. It’s all here in our Halloween primer.

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Starting your own food truck

By now, we’re all well aware of the fantastic food-truck phenomenon. But how do you do it yourself? If you’re thinking about hitting the road with your own cuisine, here are five things you Need to Know.