I saw a story about Earth Hour on the news last night and I thought it was really cool. Read about it .. then turn out your lights from 8 to 9 pm today, your local time. Its the perfect opportunity to have a candlelight dinner 
Also .. check out Google as they’re spreading the word
I saw about that too and was thinking about doing that (if I can remember). We’ll have to come up with something creative to do with the kids, but I bet we can make it fun. Maybe we’ll play by flashlight or something.