Flying into Amsterdam’s Schiphol Airport on an overnight flight, I saw the most crazy sight — a world that looked like something from a sci-fi movie.  The massive industrial greenhouses dotting the flat Dutch landscape looked like phosphor-coated LED chips rendered at a gargantuan scale.  But what horrific light pollution.  No wonder why seeing stars in Amsterdam is so rare — the extremely high humidity and these massive facilities pumping out billions of lumens into the sky.  Hopefully the directional nature of LED lighting cuts down this problem in the future.