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How NASA Planetary Protection Works
science.howstuffworks.com/nasa-planetary-protection.htm
What if your job were to protect life in the galaxy at all costs? Read about NASA's Planetary Protection program at HowStuffWorks.
10 Reasons Why Space Exploration Matters to You
science.howstuffworks.com/10-reasons-space-exploration-matters.htm
Yes, we have some amazing inventions thanks to space exploration, and we're curious about life on other planets. But the cosmos also touches a deeper part of our psyches. Here are 10 reasons space exploration matters to you.
Could Noah's ark really have happened?
history.howstuffworks.com/history-vs-myth/noahs-ark.htm
Is it possible that Noah's ark really existed? Find out more about Noah's ark and if a great flood was a reality.
How many words do dogs understand?
animals.howstuffworks.com/pets/dogs-understand-words.htm
Do dogs understand what you say to them? Unbelievably so, dogs may understand over 100 words. Learn more about dogs' understanding of words.
5 Tips for Adjusting to an Empty Nest
health.howstuffworks.com/wellness/aging/empty-nest/5-empty-nest-adjusting-tips.htm
Empty nest adjusting tips will help you get through the transition of all the kids leaving the house. Take a look at some empty nest adjusting tips.
Does Stress Really Make Your Hair Go Gray?
health.howstuffworks.com/wellness/aging/aging-process/stress-gray-hair.htm
Does stress really cause gray hair? Explore this article to find out where gray hair comes from and what role stress plays in its development.
How Rail Guns Work
science.howstuffworks.com/rail-gun.htm
Rail guns leave gunpowder-based weapons in the dust (one can hit a target 250 miles away in six minutes). So why isn't the military using them? Find out how rail guns can be used and learn about the limitations of this technology.
How Carbon Footprints Work
science.howstuffworks.com/environmental/green-science/carbon-footprint.htm
While actual footprints measure size, weight and speed, carbon footprints measure how much carbon dioxide (CO2) we produce in our daily lives. Do you know how big your carbon footprint is?
What Is the Chemtrails Conspiracy Theory?
science.howstuffworks.com/transport/flight/modern/what-are-chemtrails.htm
It's hard to look up in the sky on a clear day and not see a "cloud" trailing from an airplane. They're called contrails, though some refer to them as "chemtrails" and have odd explanations for their existence.
Psoriasis Overview
health.howstuffworks.com/skin-care/problems/medical/psoriasis.htm
Psoriasis can be a painful skin problem. Learn more about how psoriasis works at HowStuffWorks.