Search Results | Scientific method
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How the Enlightenment Worked
history.howstuffworks.com/historical-events/enlightenment.htm
The Enlightenment was a period of major intellectual change. Read about the Age of Enlightenment and the Enlightenment thinkers' impact on history.
What are the origins of democracy?
history.howstuffworks.com/history-vs-myth/origins-democracy.htm
What are the origins of democracy? Read about politics in the United States (which is actually a republic), the ancient Athenians and the origins of democracy.
How Old Is Earth and How Did Scientists Figure It Out?
science.howstuffworks.com/how-old-is-earth.htm
In 1953, CalTech geochemist Clair Patterson came up with an estimate for Earth's age that still holds today.
How Many Orbeez Does It Take to Fill a Bathtub?
science.howstuffworks.com/math-concepts/orbeez-fill-bathtub.htm
It's an important question, so come with us and we'll show you how to figure it out.
Why We Feel Hungry … Even When We're Not
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Hunger doesn't always feel like a grumble in the tummy. Find out how our bodies alert us to hunger, even when we don't need food, at HowStuffWorks.
10 Innovations in Water Purification
science.howstuffworks.com/environmental/green-tech/sustainable/10-innovations-water-purification.htm
As far back as 1500 B.C.E., people were trying to purify water to make it drinkable. And we're still at it. Today inventors use tools as simple as clay and as sophisticated as carbon nanotubes to bring clean water to the world.
Are we living in a computer simulation?
computer.howstuffworks.com/living-in-computer-simulation.htm
Computer simulations can be very life-like, but so real that we might be living in one? Find out if we are living in a computer simulation.
Three Famous Hypotheses and How They Were Tested
science.howstuffworks.com/innovation/scientific-experiments/hypothesis.htm
From Isaac Newton to Ivan Pavlov, scientists have developed and tested hypotheses through carefully crafted experiments for centuries. Here are three groundbreaking hypotheses and the predictions they tested.
What Are UFOs? Select Theories and Shifting Scientific Stances
science.howstuffworks.com/space/aliens-ufos/what-are-ufos.htm
What are UFOs, and are UFOs real? Learn about UFOs in this article from HowStuffWorks.
What Is ESP? How ESP Works
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/esp.htm
Have you ever had a dream that came true? Or called a friend at the exact moment he was calling you? Most of us have had some sort of paranormal experience. Is this evidence of the existence of ESP?