STEP Concepts
The first intitiative of GWR is STEP [Short-Term Environmental Program], a series of stop-gap measures designed to get the human race through the 21st century. All ideas have been generated within the group and are put up for discussion/ criticism.

Although varied, all these concepts have certain common features:

They are big
All achievable with current (2000's) technology
All are economically viable under a carbon trading regime