
The ancient Greeks and Romans were the first to realize how to harness the sun for light and warmth. Today, it's common to consider window placement for optimum use of the sun when building new structures, and it's no longer unusual for buildings to use solar cells for electricity!...

The ancient Greeks and Romans were the first to realize how to harness the sun for light and warmth. Today, it's common to consider window placement for optimum use of the sun when building new structures, and it's no longer unusual for buildings to use solar cells for electricity!...