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When Does an Epidemic Become a Pandemic?

health.howstuffworks.com/diseases-conditions/infectious/pandemic.htm

The World Health Organization just declared the coronavirus a full-blown pandemic. What does that even mean, and how is that different from an epidemic?

How to Use DNA Testing for Genealogy Research

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Using DNA for genealogy research is becoming more commonplace. Visit HowStuffWorks to learn about using DNA for genealogy research.

Where did SARS come from?

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Where did SARS come from? Visit HowStuffWorks to learn more about the origins of SARS from this article.

How Will You Do on This Tough, Irritating Geography Quiz?

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Our world is full of fantastic and interesting mountains, lakes, cities, and other geographical landmarks. Grab your passport and see if you can master this tough and strange geography quiz!

How Do Animals Survive Major Storms?

animals.howstuffworks.com/animal-facts/do-animals-survive-major-storms.htm

Miraculously many animals are able to ride out some of Mother Nature's most powerful storms. HowStuffWorks looks at just how they do it.

Coyotes: The 'Song Dogs' of North America

animals.howstuffworks.com/mammals/coyote.htm

The coyote inhabits most areas of North America. HowStuffWorks gets to know the 'song dog.'

5 Reasons Parasites Are Beneficial to Earth

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You probably think all parasites are disgusting little critters, but that's not always the case. Several are actually critical to the planet.

The Hottest Place on Earth and 9 Scorching Contenders

science.howstuffworks.com/nature/climate-weather/atmospheric/hottest-place-on-earth.htm

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.

The Ultimate "Attack on Titan" Quiz!

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"Attack on Titan" is a bloody show that is bloody good! If you agree, take this quiz and find out how much you know about the characters trying to survive in this world!

Are Polar Bears Endangered?

science.howstuffworks.com/environmental/green-science/polar-bear-global-warming.htm

Polar bears and global warming are getting attention from conservationists and the general public. See why polar bears are threatened by global warming.

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