Inspired by energy meters that can be installed at home, I suggest to measure the energy consumption of individual employees and let them champion their own energy profile. Plus, create an annual award for the company's energy champion.
When I look at one of the major energy uses in our working live it is commuting every day from home to work (and back). I think one of the major goals of society, city planners and businesses is to reduce the commute for everyone.
I've just read this article about finding office space near your home: Here's Help Finding A Nearby "Office" Away From The Office (http://www.readwriteweb.com/mobile/2012/09/work-from-home-without-having-to-be-there.php); expanding this mobile app to allow companies to advertise their idle office space would already be a first step in the direction I have mentioned.
Thanks to both of you; yes, I am totally supporting the notion we should bring us humans closer to nature again. I am particular fan of trees and forests and as Cyndie pointed out, they help to balance heat a lot and protect from big water torrents (rain, tsunami, etc).
If you take my idea further and try to achieve a more condensed form of living (e.g. multi-level residential areas, avoid small villages, etc) then we would suddenly have a lot more area & space for (untouched?!) nature around us, which we can exploit for recreation and entertainment.