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How can a plastic bag be green?
science.howstuffworks.com/environmental/green-science/plastic-bag-green.htm
A plastic bag can actually be green thanks to some new technological advancements. Find out how a plastic bag can be green.
Periungual Warts Overview
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Periungual warts usually form around fingernails and toenails. Learn more about how periungual warts work at HowStuffWorks.
What are the economic drawbacks of using biofuels?
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What are the economic drawbacks of using biofuels? Read about the downsides of using biofuels at HowStuffWorks.
Exploring Jovian Planets, the Titans of Our Solar System
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The four Jovian planets are officially designated as gas (and/or ice) giants. Which planets are they and what makes them so unique?
How the International Space Station Works
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In 1984, President Ronald Reagan had a vision for a permanently inhabited space station. Today that vision is a reality we know as the International Space Station.
How Light Propulsion Will Work
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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.
How Geothermal Energy Works
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Geothermal energy is clean, abundant and renewable. Learn about geothermal energy, geothermal heat pumps and geothermal power plants.
5 Most Amazing Caves
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The Doll's Theater of Carlsbad Caverns looks otherworldly and took ages to form. What other incredible sights await us below ground?
How the Cadillac Provoq Works
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The Cadillac Provoq may be luxurious, but it also sports eco-friendly materials and high fuel efficiency. Read about the Cadillac Provoq in this article.
Will we soon be extinct?
science.howstuffworks.com/life/evolution/mass-extinction.htm
A mass extinction on Earth is long overdue, according to population ecologists. Find out what Earth's fossil record may be telling us about our future.