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How can studies on rats apply to humans?
science.howstuffworks.com/innovation/scientific-experiments/studies-rats-apply-humans.htm
Rats! They're just like family. Evolutionarily, anyway. So when it comes to research and biomedical study, what can they do for us?
Do bacteria cause body odor?
health.howstuffworks.com/wellness/men/sweating-odor/bacteria-cause-body-odor.htm
Do bacteria cause body odor? Visit HowStuffWorks to learn if bacteria cause body odor.
Can You Sue Over 'Third-hand Smoke' Exposure?
people.howstuffworks.com/can-you-sue-thirdhand-smoke-exposure.htm
Could there be a day when people sue over tobacco residue left behind in a building's walls or carpet? HowStuffWorks investigates.
Can amateur astronomers spot exoplanets?
science.howstuffworks.com/can-amateur-astronomers-spot-exoplanets.htm
It's not just NASA pros staring into the night sky. Lots of skilled amateurs are out there pointing their telescopes into the great beyond. But can the average space enthusiast actually make a critical discovery?
What's a polymer?
science.howstuffworks.com/polymer.htm
Polymers are the basic components in so many of the products we use each day. Learn how more about how polymers work.
What if There Were No Cockroaches?
science.howstuffworks.com/science-vs-myth/what-if/what-if-there-were-no-cockroaches.htm
Cockroaches are among the most reviled creatures on the planet. They bring bacteria and allergens wherever they go - along with severe cases of the creepy crawlies. But would we really want to live in a world devoid of these little pests?
When You Smell Poop Are You Actually Inhaling Poop Molecules?
health.howstuffworks.com/human-body/systems/digestive/smell-poop-inhaling-poop-molecules.htm
Smelling fecal matter is gross enough, so the possibility that tiny bits of poop are actually getting into your nose is outright disgusting. But should you be worried?
The Zoo Hypothesis: Are Aliens Watching Us Like Animals in a Zoo?
science.howstuffworks.com/space/aliens-ufos/zoo-hypothesis.htm
Is it possible that we are not alone in the universe, but are just like animals in a zoo to the aliens who are watching us?
How Nostalgia Works
science.howstuffworks.com/life/inside-the-mind/human-brain/nostalgia.htm
Nostalgia, contrary to centuries of common knowledge, appears to be a good thing. A really good thing.
How do the engines breathe in diesel submarines?
science.howstuffworks.com/transport/engines-equipment/question286.htm
How do the engines breathe in diesel submarines? Don't internal combustion engines need a lot of oxygen to run? Where would all of this oxygen come from when the sub is underwater?