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An Astrologer Explains the Air Signs: Gemini, Libra and Aquarius
entertainment.howstuffworks.com/horoscopes-astrology/air-signs.htm
The astrological signs are grouped into four elements - fire, water, earth and air. So what does it mean if you're an air sign?
Solving a Parabola Equation and Understanding Applications
science.howstuffworks.com/math-concepts/parabola-equation.htm
We get it: You need help with the parabola equation because those graphs won't draw themselves. Here's how to draw a parabola from an equation.
How Carbon Capture Works
science.howstuffworks.com/environmental/green-science/carbon-capture.htm
We know that humans are largely responsible for fueling global warming with our carbon emissions. So what if we could seize all that carbon and squirrel it away in a safe place? Well, we can. It's just hard and really expensive.
How Light Propulsion Will Work
science.howstuffworks.com/light-propulsion.htm
Like many new technologies, light propulsion was originally conceived as a tool of war and national defense. But the "Star Wars" missile defense system may eventually send rockets, rather than missile-destroying lasers, into space.
10 Amazing Green Cities
science.howstuffworks.com/environmental/green-science/five-amazing-green-cities.htm
Sure, the Emerald City looked green, but you won't need green-tinted glasses to see how environmentally friendly the cities on this list are. What makes a city amazingly green?
911 Angel Number Meaning: Spiritual Awakening, Transformation, and New Beginnings
science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/911-angel-number-meaning.htm
Is 911 appearing everywhere you look? It's more than just a number – it's a powerful sign from your angels! Uncover the urgent message they're sending about your life's purpose, opportunities, and the need for immediate action.
How Hydropower Plants Work
science.howstuffworks.com/environmental/energy/hydropower-plant.htm
Hydropower plants produce about 24 percent of the world's electricity and supply more than 1 billion people with power. Find out how hydropower plants work.
How Auroras Work
science.howstuffworks.com/nature/climate-weather/atmospheric/aurora.htm
An aurora is a light phenomenon caused by solar winds interacting with the Earth's magnetic field. Learn more about auroras.
What's Oil Shale?
science.howstuffworks.com/environmental/energy/oil-shale.htm
Oil shale is just one unconventional oil source that's being researched. Learn how oil shale could save the day when - and if - we hit peak oil in the U.S.
How Solar Cooking Works
science.howstuffworks.com/environmental/green-science/solar-cooking.htm
If you've ever seen a kid frying ants with a magnifying glass, you know that the concentrated power of the sun can create great heat. But what if that heat were applied to something a bit more productive -- something like cooking food?