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What is the neurochemistry of happiness?
science.howstuffworks.com/life/neurochemistry-of-happiness.htm
There's a connection between our physical bodies and the way it responds to emotion -- but scientists aren't quite sure what it is. Could it be that happiness is little more than a series of neurochemical responses to the world around us?
What is the oldest fossil ever found?
science.howstuffworks.com/environmental/earth/geology/oldest-fossil-ever-found.htm
The oldest fossil ever found could date back to 3 billion years ago. Learn about the oldest fossil ever found in this article.
What is the origin of life on Earth?
science.howstuffworks.com/life/evolution/origin-of-life-on-earth.htm
What is the origin of life on Earth? Learn about theories of evolution and the origin of life on Earth at HowStuffWorks.
What is the secret to happiness?
science.howstuffworks.com/life/secret-to-happiness.htm
What's the secret to happiness? Learn about research in the area of happiness and what is the secret to happiness at Discovery Health.
What is the universe made of?
science.howstuffworks.com/universe-made-of.htm
What is the universe made of? Is it made of atoms like everything found on Earth? Find out what the universe is made of in this article.
What is the urban heat island effect?
science.howstuffworks.com/environmental/green-science/urban-heat-island.htm
Cities are often hotter than rural areas because of the urban heat island effect. Learn what an urban heat island is.
What is thermal technology?
science.howstuffworks.com/environmental/energy/thermal-technology.htm
When gas prices leap, people take an interest in thermal technology. Find out what thermal technology is and how heat is used to produce energy.
What is ultrasonic mind control?
science.howstuffworks.com/ultrasonic-mind-control.htm
Ultrasonic mind control is explained in this article. Learn about ultrasonic mind control.
What is urushiol?
science.howstuffworks.com/life/botany/urushiol.htm
Urushiol is the active chemical in poison ivy. Learn more about urushiol and how to properly remove poison ivy.
What is voltage?
science.howstuffworks.com/what-is-voltage.htm
Voltage is how we measure the difference in electric potential energy. Learn about what voltage is from this article.