Easy distributed citizen science opportunity

By way of the Bad Astronomer:

The GLOBE Project is gathering data on light pollution in the easiest way possible. All you have to do to help is to go out an hour after sunset, wherever you happen to be, and look at Orion. Compare what you see to the magnitude charts on the website. Tell them, and they compile the data, which if enough people participate, gives a sense of the prevalence and trends in light pollution all over the world.

Oddly, it looks like Coastal California has not been participating until now.