Green Tips

As I was microwaving my soup this afternoon, I was reading the "Green Tips" that are posted in our kitchens and one of them is to plan activities outside. I'm not really sure how this is "green" except it keeps people from doing things inside that use electricity and what not.

Anyway, a few of the examples they gave were "go on a hike, ride your bike, try camping..." Try camping? Did they write this for me?