Green Science

Green Science is the application of eco-friendly thinking to scientific disciplines. Learn about global warming, pollution and other impacts on nature and the planet, plus what we can do to combat them.

Learn More / Page 2

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

How do we reduce greenhouse gas emissions? A carbon tax is one answer. A simpler alternative to cap-and-trade schemes, a carbon tax encourages energy efficiency and reduced consumption.

By Sarah Dowdey

Advertisement

Organic food promises freedom from synthetic ingredients. Find out what organic food is, how organic farming works, what the pros and cons are, and why you should care.

By Robin Brett Parnes

How do plants compare to solar cells when it comes to collecting solar energy? Would you get more power from an acre of ground by putting solar cells on it or by raising plants?

We want the ozone layer, but we don't want ozone pollution... Good in the atmosphere but bad on the ground? Find out about ozone pollution, how it affects you and what you can do about it.

By Craig Freudenrich, Ph.D.

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

Advertisement

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

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?

By William Harris

Why waste drinkable water on your yard when your old bathwater will suffice? That's the idea behind gray water reclamation -- getting the most out of your water through reuse.

By Robert Lamb

You might think of solar panels as large racks of rigid panels on someone's roof, but newer solar cells are more flexible and efficient.

By William Harris

Advertisement

Scientists are stockpiling the world's seeds, organizing them in giant libraries of planting possibilities. Is every type of plant included? Or, are the seeds of pesky plants shunned?

By Debra Ronca

Protecting the Earth is serious business for a radical group of environmental and animal activists dubbed eco-terrorists. Who are they? Why does the FBI consider them a top priority?

By Jennifer Horton

Wind energy is great, but what happens when there's no breeze? The Iowa Stored Energy Park will store compressed air underground. Can it replace traditional energy sources?

By William Harris

Plants absorb carbon dioxide and feed us oxygen. So it's pretty much a no-brainer: Plowing down our forests is a bad idea. What's driving the destruction? And is anything being done to stop it?

By Debra Ronca & Sascha Bos

Advertisement

You’ve probably seen some plastic labeled “BPA free,” but does that make it safer?

By Jennifer Horton & Sascha Bos

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.

By Debra Ronca & Mark Mancini

In this mass graveyard, workers dismantle 52,000-ton ships using simple hand tools. Why would anyone want to work at Alang? Is this place doing the world a service by recycling obsolete ships?

By Sarah Winkler

Depending on who you ask, urban sprawl is either the best thing that ever happened to growing families -- or the downfall of civilization and the environment as we know it. Learn about the history and consequences of this American phenomenon.

By Alia Hoyt

Advertisement

Many people think that beautiful, blazing sunsets are one upside to living with the smog that hangs over polluted cities. Are they right? Does smog actually enhance sunsets?

By Julia Layton

Usually we're focused on our personal power consumption -- wondering why our gas bill went up or took a dip. But what if we added up everybody's power consumption? How much would it be?

By Maria Trimarchi

With the global food crisis, some people feel that using food to make biofuel just doesn't make sense. Could algae be a solution? How could algae possibly fuel cars and even airplanes?

By Stefani Newman

Wetlands may look murky and even creepy, but their value is clear. They soak up floodwaters and filter runoff before it enters our lakes and streams. How can we protect these spongy areas?

By Debra Ronca

Advertisement

Are wind farms and other renewable energy sources the closest we can come to free energy? Isn't there some crackpot invention out there that you can set up in your backyard?

By Jessika Toothman

What if you could scrub out carbon dioxide emissions before they ever dirtied the atmosphere? This exciting technology could do just that, but will the benefits outweigh the costs?

By Jennifer Horton