As you celebrate Earth Day 2014, find out if you're living as "green" as you think.
White-colored roofs, which are common in some tropical nations, can cut your cooling costs by up to 20 percent if you live in a warm climate -- roughly south of Columbus, Ohio. But be sure it won't break any homeowner association rules first, as some have strict guidelines on aesthetics.
iStock / gbh007
National Portrait Gallery, London
iStock / mashabuba
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