We face a series of existential challenges posed by our stewardship of the global environment that can only be addressed transnationally.
We need to move to closed loop systems where we recycle - minimizing what we put in the air, the water and the earth. We need to nuture institutions and science based cultures supportive of maintaining the natural systems that will sustain the planet.
We need also to be open to new ideas that may allow us to undo some of what has gone before to keep a balance and to create new environments on planets that might be hospitable to man. Twitter: #geoengineering