Environmental Science

The environment is truly a thing of beauty and should be protected whenever possible. What can we do to save the environment, and what new technology is available to help us?

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Right now, landfills are all over the place. Yet, no one wants to live near one. So, what if we combined all of those landfills into one? How much space would it take up?

By Marshall Brain

The United States has an abundant supply to clean drinking water available in homes and businesses. But what if that water turned out not to be so clean? And what about the water supply around the world?

By Marshall Brain

Seventy percent of the Earth's fresh water is in polar ice caps, the those caps calve icebergs all the time. So why can't we use those icebergs to provide fresh water that so many countries are in desperate need of?

By Marshall Brain

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Glaciers carve out lakes, grind down mountains and pulverize rocks to dust. These massive ice slabs shape our Earth, but they may be disappearing.

By Ed Grabianowski

Archaeology is the study of humanity's material remains -- even a piece of an ancient pot can tell us a lot about the past. But how do archaeologists make sense of these relics?

By Sarah Dowdey

One iceberg sank the unsinkable Titanic, and another exploded in front of an expedition. These floating chunks of ice carry their bulk deceptively below the surface of the water. What else are they hiding?

By Ed Grabianowski

Saber-tooth cats have long been likened to tigers, but they aren't tigers at all. While they share some physical traits and hunting practices with tigers, saber-tooth cats are also quite different.

By Tracy V. Wilson

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Have you ever wondered what happens when you flip a switch to turn something on? You're completing an electric circuit, allowing a current, or flow of electrons, through the wires.

By Sidney Soclof

The 1993 movie "Jurassic Park" did a good job of bringing the idea of cloning dinosaurs into popular culture. It portrayed dinosaur cloning in a way that made sense to a lot of people, but is it really possible?

By Tracy V. Wilson

Every time a new fossil is found, one of the first things scientists determine is how old that fossil really is. But how do they determine it, and how can they be completely accurate?

By Tracy V. Wilson

Oil is a nonrenewable resource. Have we found all the oil there is to find, or is there more out there somewhere? What's the best way to wean ourselves from our oil dependency?

By Josh Clark

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The waste collectors threw your recyclables into one big bin on their truck. How do you know your recyclables are being recycled? And what happens to them next?

By Josh Clark

Fossils tell a story, much like the clues at the scene of a crime. Researchers look for evidence and paleontologists study that evidence to answer questions about the past.

By Tracy V. Wilson

Consumers are becoming more and more knowledgeable about food safety and their health. As a result, organic farming has entered the agriculture mainstream. But what methods must be used, and how is organic farming certified?

By Maria Trimarchi

To see a dinosaur these days, you can visit any number of museums or traveling exhibits. But you don't necessarily have to leave your yard either.

By Tracy V. Wilson

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Hieroglyphics used to be a language that no one -- Egyptian or otherwise -- could decipher. With the help of the Rosetta Stone, that all changed.

By HowStuffWorks.com Contributors

Oil spill cleanup is often done through containment and skimming the oil off the surface of the water. Learn about oil spill clean-up methods.

By Josh Clark

It's evident the debate over climate change is a heated one. Are skeptics clouding the public judgment for money? Are climate-change believers merely alarmists who risk the present for the future?

By Josh Clark

The sea scorpion may have been the largest bug to ever live on the Earth, according to a recent find. Learn more about the giant sea scorpion.

By Josh Clark

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On a planet that is 70 percent water, people don't have enough clean, safe water to drink. We're in a water crisis, and water rights are becoming a big issue. What happens if we just plain run out?

By Josh Clark

The Sierra Club lobbies for environmental preservation and engages members in fun wilderness excursions.

By Sarah Dowdey

Water is just hydrogen and oxygen, so why can't we do what nature does and combine the two? Unfortunately, it's not that simple, and the results can be rather ... explosive.

By Josh Clark

In its purest form, it's odorless, nearly colorless and tasteless. It's in your body, the food you eat and the beverages you drink. All forms of life need it. What substance is more necessary to our existence than any other? Water.

By Shanna Freeman

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What's as big as a continent and sitting in the middle of the Pacific Ocean? A pile of garbage that extends 100 feet (30 meters) below the surface of the water.

By Jacob Silverman

The 7 wonders of the natural world capture the imagination with their natural power and beauty. There is nothing that man can create that can match the beauty nature can create. Learn about all 7, including the great barrier reef.

By the Editors of Publications International, Ltd.