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Where Is the Coldest City in the World?

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If you're looking for a place to live and you don't mind some seriously frosty winters, you have plenty of options to choose from. But some places endure more than a few blustery months, and no parka or insulated mittens will feel like enough. Those are contenders for the title of coldest city in the world.

How The Nature Conservancy Works

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The Nature Conservancy is explained in this article. Learn about the Nature Conservancy.

Landmark TWA Flight Center Now Stuns as Hotel

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It took 22 agencies and more than 180 firms to turn Eero Saarinen's groundbreaking TWA terminal into a spectacular hotel. HowStuffWorks visits.

How Bearings Work

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Bearings are the invisible heroes inside many mechanical devices. Learn about all different kinds of bearings, including 5-foot ball bearings that keep buildings on solid footing.

How Recycling Works

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Recycling involves taking something useful and turning it into something new instead of throwing it away. Learn about recycling and the many types of recycling.

The Hottest Place on Earth and 9 Scorching Contenders

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When challenged to name the hottest place on Earth, sprawling desert environments like Death Valley or the African Sahara probably spring to mind. However, extreme heat nearly matching those examples can occur on five continents, and some of these hottest places are even densely populated by humans.

11 Inventions That Changed the World as We Know It

science.howstuffworks.com/innovation/inventions/5-funny-inventions-that-changed-the-world.htm

Inventing a useful product or process is serious business - turn a great idea into a marketable widget, and you could earn millions of dollars. But that doesn't mean your widget has to be straitlaced and conservative.

Are Humans Apes? Tracing Our Evolutionary Path

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Are humans separate from chimps and other apes? Learn what separates us from chimps.

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.

5 Things to Consider When Building a Solar-powered Home

science.howstuffworks.com/environmental/green-tech/sustainable/5-solar-home.htm

While rebates and tax credits have put solar power within reach for many homeowners, it's still an expensive undertaking. How do you make sure you get your money's worth?

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