Create cooling shade and add some flair to your yard by planting a tree. Not only will it help lower heating and cooling costs by shading your home during the summer and blocking cold winds in the winter, but it can increase your property value. Beauty sells, after all. If that weren't enough, numerous studies have shown that having trees around can reduce stress and inspire feelings of serenity and peace in our hectic modern lifestyles. But here's the coolest fact of all. If every American family planted just one tree this year, it would keep one billion pounds of carbon dioxide out of the atmosphere. Start a growing trend in your neighborhood today.