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Interactives

Glowing and twinkling lights can put you and your neighbors in the holiday spirit. But how much will you pay for that pleasure when you open next month's electricity bill? Go

Your National Park Photos

Take in the varied terrain and vivid views found in these viewer-submitted images from America's national parks. Go

Calculate Water Consumption

Seal Energy Leaks

Winter Is Here! Why Do Seasons Change?

Home Composting: How Does It Work?

How Do Hybrid Cars Work?

Interactive: $1,500 For Home Repairs

Green Features

America's Cleanest Cities

The American Lung Association ranks the least polluted cities in America in its annual State of the Air report. Find out if your city made the cut. Go

Going Camping? Go Green!

'Green' Lawns Benefit Planet, Pocketbook

Green Your Grill To Improve Your Health

Human-Powered Car To Hit Market Next Year

Green Up Your Sex Life With These 5 Tips

Natural Products Make Cleansing Spiritual

Sharing Cars Can Save Money, Earth

How You Drive Can Make Your Car Greener

Upgrading? Reuse, Recycle Your Analog TV