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What percentage of air pollution is due to cars?

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What percentage of air pollution is due to cars? Visit HowStuffWorks to learn what percentage of air pollution is due to cars.

How the California Air Resources Board (CARB) Works

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The California Air Resources Board regulates air quality in the state of California. Find out more about the California Air Resources Board in this article.

How Much Do You Know About Gasoline?

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Fuel up on these petrol facts! It's time to gauge how much you really know about gasoline. Learn about the heavy hitters in the oil game, the role that biodiesel gasoline plays in the 21st century and even more facts. Start up this quiz for some gasoline wisdom now!

How does public transportation help the environment?

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In January 2004, the citizens of Milan, Italy, were preparing for a strike that would shut down all public transportation. Since an estimated 28 percent of greater Milan’s 3 million populace relied heavily on public transit, the strike meant gridlock for most of the city.

Can You Name These Countries Drastically Affected by the Climate Crisis?

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Part of the world is sinking, part of the world is burning, part of the world is too hot, part of the world is too cold and cyclones, tsunamis, earthquakes and hurricanes are getting stronger. Can you name these countries affected by climate change?

Can You Identify the World Capital When Only Shown One Photo of It? Most Fail!

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The Eiffel Tower not only represents Paris, but the symbol of the country globally. A symbol which embodies the city of love and a country that not only produces fragrant cheeses but also performed the world’s first artificial heart transplant and face transplant. But you already know that! So see how many other world capitals you can recognize!

Can China control the weather?

science.howstuffworks.com/nature/climate-weather/meteorologists/cloud-seeding.htm

Weather control is being looked at by Chinese officials as a way of ensuring clear skies for the Olympic Games. Read about weather control methods.

Can You Identify All of These Countries in the Americas From an Outline?

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What better way to test your facts of the Americas than this quiz? Correctly identify countries of North and South America from their outlines, and we'll offer up superb facts about each nation. Major hint: Most of the destinations will be Latin American, bueno? So choose accordingly! Boa sorte!

All About the Audubon Society Fund

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The Audubon Society was founded to promote legislation that protects birds, wildlife and the ecosystems that support them. Learn about the Audubon Society.

The Driest Place on Earth: Chile's Atacama Desert

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The Atacama Desert, situated in northern Chile, is not just any ordinary arid region. Spanning over 600 miles (965 km) along the Pacific Coast of South America, it is one of the most extreme landscapes on the planet. Thanks to certain oceanic conditions, there are areas that have received zero rainfall throughout recorded history, making the Atacama Desert the driest place on Earth.

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