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How Many Countries Are There in the World?
history.howstuffworks.com/world-history/how-many-countries-in-world.htm
It's a big old world and the number of countries it contains changes all the time. So, do you know how many there are? It's not an easy question.
National Bubble Wrap Day? Who Is Making Up These Weird Holidays?
people.howstuffworks.com/culture-traditions/holidays-other/weird-national-holidays.htm
Love bubble wrap? There's a holiday for that. And just about everything else. But who's creating them and why?
Grasshopper vs. Cricket Sounds, Anatomy, and Habitats
animals.howstuffworks.com/insects/grasshopper-vs-cricket.htm
Grasshoppers and crickets often get lumped together. After all, they both hop, chirp, and love grass.
The African Clawed Frog and Early Pregnancy Tests
animals.howstuffworks.com/amphibians/african-clawed-frog.htm
Meet the African clawed frog, a fully aquatic amphibian that's part living fossil, part lab legend, and part ecological wildcard.
What Is the Most Dangerous Place in the World? 11 Risky Contenders
history.howstuffworks.com/world-history/what-is-the-most-dangerous-place-in-the-world.htm
When people ask, what is the most dangerous place in the world, the answer depends on whether you're talking about war zones, harsh environments or crime-ridden cities.
9 Best Countries for Healthcare (Important Info for Expats)
health.howstuffworks.com/wellness/best-countries-for-healthcare.htm
If you are researching the best countries for healthcare, you are really comparing how well national systems deliver quality medical care, control costs, and produce strong health outcomes.
How Airport Security Works
science.howstuffworks.com/transport/flight/modern/airport-security.htm
According to the Department of Homeland Security 730 million people travel on passenger jets every year. Are these folks safe? Find out how high-tech solutions are being used to make flying as safe as possible.
How Grid Computing Works
computer.howstuffworks.com/grid-computing.htm
Grid computing systems share hardware resources to work on projects. Learn how grid computing can be used to solve complex problems.
How Houseflies Work
animals.howstuffworks.com/insects/housefly.htm
Though houseflies scavenge and carry disease, houseflies also provide food for the local ecosystem. Learn why houseflies love the great indoors.
How Animal Testing Works
science.howstuffworks.com/innovation/scientific-experiments/animal-testing.htm
Animal testing has a long, gruesome history, but it's also saved countless human lives.