Seriously, why are there no laws against light pollution?
It's really this easy:
1) Make car headlights have a shield so that they do not project light upwards and into the night sky
2) Mandate that all streetlights have flat lenses with a shield over the top (like
this)
3) Reduce excessive lighting from stadiums and other large complexes
4) Reduce other pollution! Haze can ruin a night that would normally be clear. The light from the ground bounces up into the sky, illuminating the haze and therefore blocking out the stars)
This was a picture taken of the night sky over an urban area in the Northeastern US during a blackout:
While we probably wouldn't get this much accomplished, we could at least be able to see a general outline of the Milky Way if we reduced light pollution.