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Why Is Octopus Blood Blue?
animals.howstuffworks.com/marine-life/why-is-octopus-blood-blue.htm
Octopuses have blue blood, not red blood like most other mammals. Find out why scientists think octopus blood is blue at HowStuffWorks.
Why Fruit Flies Were the First Animals in Space
science.howstuffworks.com/why-fruit-flies-were-first-animals-in-space.htm
The little flies have way more in common with us than you think. And it made them the perfect test animal to send to space.
Can You Name These Countries With Mostly Red Flags?
play.howstuffworks.com/quiz/can-you-name-these-countries-with-mostly-red-flags
Red for valor. Red for bravery. Red for life, for passion, for blood and for honor. Sometimes red is even for luck. Countries all around the world use red in their flags, so how many do you think you can identify? Run this quiz up the flagpole and see who salutes!
5 Plaque Removers That Really Work
health.howstuffworks.com/wellness/oral-care/products/5-plaque-removers-that-really-work.htm
When hardened plaque builds up on your teeth and turns into tartar, your risk of gum disease increases. Learn about 5 plaque removers that really work.
9 Extinct Exotic Sea Creatures
animals.howstuffworks.com/extinct-animals/9-extinct-exotic-sea-creatures.htm
A stunning array of strange and ferocious aquatic beasts patrolled Earth's waters long before they became the stuff of legends and "Jurassic Park" movies. One could eat a great white shark in one gulp.
Why do we study bugs?
animals.howstuffworks.com/insects/why-study-bugs.htm
There are many reasons why we study bugs, from protecting crops to preventing the spread of disease. Learn more about why we study bugs at HowStuffWorks.
What Attracts Roaches and Where Do Roaches Hide?
Cockroaches are nasty little critters and one of the worst things about them is you never know where they're hiding. We'll tell you 10 places they could be and how to get rid of them.
Does the Immortal Jellyfish Actually Live Forever?
animals.howstuffworks.com/marine-life/immortal-jellyfish.htm
The immortal jellyfish, known as Turritopsis dohrnii, has the ability to reverse age and theoretically live an eternal life. Because of its ability to regrow its cells, it could theoretically escape death over and over again.
Do men and women need different cleansers?
health.howstuffworks.com/skin-care/cleansing/basics/men-women-cleansers.htm
Do men and women need different cleansers? Take a look if different cleansers are better for certain genders.
Petrified Wood: A Journey From Tree to Stone
science.howstuffworks.com/environmental/earth/geology/petrified-wood.htm
Petrified wood can be found all over the world, but how is it created?