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Multiple Sclerosis Overview
health.howstuffworks.com/diseases-conditions/musculoskeletal/multiple-sclerosis.htm
Multiple sclerosis, also known as MS, causes the body to attack itself. How do you get multiple sclerosis, and why are twice as many women as men affected?
The IQ Scale: What Does Your IQ Score Really Mean?
science.howstuffworks.com/life/inside-the-mind/human-brain/question455.htm
The term IQ typically refers to a score on a test that measures someone's cognitive ability. What does this test constitute exactly? And does it accurately measure intelligence?
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.
Are Humans Apes? Tracing Our Evolutionary Path
science.howstuffworks.com/life/evolution/man-chimp-ape.htm
Are humans separate from chimps and other apes? Learn what separates us from chimps.
How Does the Body Make Electricity — and How Does It Use It?
health.howstuffworks.com/human-body/systems/nervous-system/human-body-make-electricity.htm
How does the human body make electricity? Learn about the human body and its ability to make electricity and find out why electrical signals are so fast.
Does singing make you happy?
science.howstuffworks.com/life/inside-the-mind/emotions/singing-happy.htm
Can singing make you happy? Take a look at what happens to your body when you sing and find out if singing makes people happy.
Do redheads need extra anesthesia?
science.howstuffworks.com/science-vs-myth/everyday-myths/redhead-anesthesia.htm
Do redheads need extra anesthesia? According to recent studies, it appears that they do. Learn about the relationship between redheads and anesthesia.
Modern Hearing Aids Do Way More Than Help You Hear
health.howstuffworks.com/human-body/systems/ear/modern-hearing-aids.htm
Technology for hearing aids has advanced drastically since our grandparents wore those big, bulky ones wrapped around their ears. Now they're Bluetooth-enabled and can even translate foreign languages on the fly.
Get to Know Proprioception, Your Silent Sixth Sense
health.howstuffworks.com/human-body/systems/nervous-system/proprioception.htm
Proprioception is our ability to perceive our body's position and how we move through space. It's considered our 'sixth' sense because we do it without thinking about it.
Is there such a thing as a truly unselfish act?
science.howstuffworks.com/life/evolution/unselfish-act.htm
An unselfish act is an act in which one person benefits while the person performing the act gains nothing. Find out if an unselfish act is possible.