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?
The Euphrates River, at the 'Cradle of Civilization,' Is Drying Up
Study Says 2035 Is Climate Change Point of No Return
5 Ideas for Doubling the World's Food Supply
What's a Subduction Zone? Everyone in the Pacific NW Should Know
What Are the Biggest Lakes in the U.S.?
The Tallest Mountain in the U.S. and 7 Close Contenders
How a Lithium Mine Works and Impacts Local Communities
How to Sell Electricity Back to the Grid
Are there any risks associated with the production of wind energy?
The Worst Air Quality in the World Is in Mountainous Terrain
The World Hits 8 Billion People; Is That Good or Bad?
Quiz: Can You Tell Climate Change Fact From Fiction?
Top 5 Green Robots
5 Things to Consider When Building a Solar-powered Home
What Uses the Most Electricity in a Home?
Learn More / Page 6
Crews have to race to contain the damage from major oil spills to prevent damage to beaches, death to marine life and birds, and devastation to local wetlands. So how do they clean them up?
By Josh Clark & Sarah Gleim
Are dinosaurs real? Most people don't have to travel too far to answer that question in the affirmative with some kind of exhibit displaying dinosaur fossils. Or simply look at any bird you can see outside your home.
Hieroglyphics used to be a language that no one -- Egyptian or otherwise -- could decipher. With the help of the Rosetta Stone, that all changed.
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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?
Recycling is a pretty simple concept: take something that isn't useful anymore and make it into something new. Learn about the process and the good and bad of recycling.
While actual footprints measure size, weight and speed, carbon footprints measure how much carbon dioxide (CO2) we produce in our daily lives. Do you know how big your carbon footprint is?
By Sarah Dowdey
Eco-conscious people purchase carbon offsets to help reduce worldwide greenhouse gas emissions. But do offsets actually help, and what does Pink Floyd have to do with them?
By Sarah Dowdey
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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.
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?
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?
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.
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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.
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?
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
Glaciers are rivers of ice and are the largest moving objects on Earth. Learn about glaciers and find out how much freshwater are frozen in glaciers.
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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?
It's not really green. It's "green." Unlike asphalt, green pavement is permeable, which means it lets rain soak through to the ground rather than roll off. How does this help our environment?
By Debra Ronca
No one likes paying bills. But you wouldn't have quite so many if you lived off the grid. How do you create enough energy to ditch public utilities?
Earthquakes and volcanoes get all the press. But the landslides they trigger are often more devastating. What makes the ground suddenly rip downhill, taking trees and homes with it?
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Thousands of women around the world choose to combat ecological problems -- they're known as ecofeminists. But what would you do if you found out your house sat atop a toxic waste dump?
Polar bears are facing a grim future as global warming melts their Arctic home. What problems are they up against and what's being done to save them?
By Julia Layton
The word "ozone" gets tossed around conversation as casually as a softball, but how many of us could really describe what the ozone layer is? The "hole" in it isn't exactly a hole.
By Jane McGrath
If you've ever walked the New York City streets in July, you've experienced the misery of this phenomenon. Why do cities heat up like furnaces while surrounding rural areas remain cooler?
By Jane McGrath
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You might never notice the relentless movement of the oceans unless their waters went eerily still. What forces drive the oceans every second of the day?
Scientists say that as of May 2007,. more people now live in urban than in rural areas. So how do planners make cities work for all those people?