An Over-Lighted World

Every night, as darkness descends, countless street lamps and lights turn on to keep the darkness at bay, bathing countless square feet of the planet in light that sometimes rivals day time. But has anyone stopped to consider what effect all this light may have on people and animals that have evolved to fit an environment where a significant part of the 24 hour day is spent in lightless conditions? Some scientists have, and they are claiming that all this light is causing numerous problems

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