See the impact of Light Trespass
Help Prevent
light trespass If you have never seen the planets and the band of light/stars of one of the spiral arms of our Milky Way Galaxy it is likely you have the issue of light trespass. The image to the left shows the same location, first with exterior lights turned off (power outage in Ontario - and then with a 'yard light' turned on.

Click on the image for a larger view.

Green House fact and info...
One dusk-dawn 100 watt lamp over a year leads to the creation of 2kg of acid rain, 1kg of ozone and 215kg of greenhouse gas
I have not confirmed these facts yet. but this is what I have so far. One 1000 watt MH (car lot light) produces 1.8 tonnes of CO2 per year. and costs $300 a year to operate! this is assuming only 10 hours per day of usasge.