In the post apocalypse section for the first scenario we have the global E.D.E.N. corporation. I've read and re-read it but I can't find anywhere that explains what it stands for. Have I missed it somewhere?

I couldn't find anything either. It may have been missed. It may also not stand for anything specific and is left to the GM and his own devices.

There's a lot of that in the rules. Leaving things to our own designs, sometimes that's not a bad thing.

As for E.D.E.N. i think it was more the implication or maybe irony of it that they were going for. Maybe we should just start throwing out ideas.

Eternal Dominion of Earth Natives?

or

The Extension Disaster Education Network.

Earthern Defense (of) Ecology Network