More To Explore ()

How long does it take nature to recover from a forest fire? Take the quiz.

Aug. 16, 2012

More than 100,000 wildfires take place in the United States each year, and these fires can claim 5 million acres of forest annually. How much do you know about the way forests burn, and how they come back from the ashes?

Do you know your trade winds from your Westerlies? Take the prevailing winds quiz!

Aug. 16, 2012

Prevailing wind patterns impact everything from the climate to ocean currents, and are responsible for both big storms and routine weather conditions. Think you don't need a weatherman to know which way the wind blows?

Going deep sea exploring? Take the deep-sea diving gear quiz!

Aug. 16, 2012

Want to explore the Florida Keys? Cruise through the Cayman Islands? You might consider scuba diving. Though it is a highly technical sport that can be dangerous if not pursued properly, it can open up a world seen by few humans. Dive in!

Who's who in the green arena? Take the quiz!

Jul. 11, 2012

Global warming, deforestation, water shortages and animal extinctions -- these issues threaten the health and well-being of every living creature on the planet. Do you know the celebrated environmentalists who keep these issues in the public eye?

Will a green lifestyle make you healthier? Take the quiz!

Jul. 11, 2012

It's no secret that a green lifestyle can have a profound effect on the environment, but did you know that going green can also improve your physical and mental well-being? See what you know about the green health solution!

How safe is our drinking water? Take the water treatment quiz.

Jul. 6, 2012

Municipal water treatment systems provide drinking water to most people in the U.S., but the quality varies dramatically. Bacteria, industrial wastes and sewage can sometimes make their way into public drinking water. Do you know the dangers?

How green is your closet? Take the quiz.

May. 14, 2012

Are you trying to green up your life? One area that might be easy to overlook is where you stash your stuff. Have you considered your closets? Take this quiz to see what you know about eco-friendly closets.

Is gravel always better than grass? Take the xeriscaping quiz.

Jan. 30, 2012

Not every city gets buckets of annual rainfall, but every gardener loves a lush landscape. Enter xeriscaping, a concept that makes sense for drier climates but should be approached sensibly. Take the quiz to test your xeriscaping sense.

How green are your vacations? Take the eco-traveler quiz.

Jan. 9, 2012

Do you avoid littering and leave as small a footprint as possible when traveling? Ecotourism might be politically correct, but do you really know all it entails? Take our eco-traveler quiz to find out how to make your next vacation truly greener.

The Good, the Bad and the Simply Irritating: Pictures of Parasites and More

Oct. 18, 2011

Creepy-crawlies like roaches and spiders might make you cringe, but there are more tiny bugs and bacteria around than you might realize -- and many take up residence right on your body and bedclothes.

loading ...

Episode 6: What's beneath America?