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A List of Demons Showing 25 Ways to Wreak Havoc on Mankind

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They go by many names. Some are symbols of destruction, others twisted forms of ancient gods, and a few look suspiciously like medieval nobles on a really bad day. Whatever you call them, this list of demons captures a lot of fear, folklore, and theology.

What conditions are required for life?

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We argue that living well requires wine and cheese, but what does living at all require? You might be surprised to find out that there's no single definition.

Are Creatures Living Among Us in Parallel Dimensions?

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We've yet to find intelligent life outside of planet Earth. But instead of space, should we be looking right here but in other dimensions?

Pluto: Is It a Planet After All?

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Back in 2006, the International Astronomical Union decided to demote Pluto to the status of a dwarf planet. A historical study challenges that designation.

How Dieselpunk Works

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The dieselpunk subgenre of speculative fiction looks at a world that could have been. Learn about the dieselpunk style and where dieselpunk gets its inspiration.

Are UFOs Real? Close Encounters of the First, Second and Third Kinds

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UFO siting classification Classification has six categories: nocturnal lights, daylight discs, radar/visual cases, and close encounters. Read more about UFO classification.

In the Mariana Trench, Animals Adapt in REALLY Weird Ways

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The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here are just a few of the trench's eye-popping residents.

What crops can be used for biomass energy?

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What crops can be used for biomass energy? Keep reading to learn about crops that can be used for biomass energy.

Scientists Detected a Space Hurricane for the First Time. What's That?

science.howstuffworks.com/nature/climate-weather/atmospheric/space-hurricane.htm

In 2014, scientists observed a space hurricane for the first time; they reported their findings this year. But what's a space hurricane - and do we on Earth have to worry about with them?

What Is Gravity?

science.howstuffworks.com/environmental/earth/geophysics/question232.htm

Gravity is the force that causes two particles to pull towards each other. Learn about gravity and find out how Newton and Einstein explain gravity.

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