Carbon negative power plants can provide energy while they overcome poverty and change economic values in the right direction.

As difficult as it is to eliminate the risk of nuclear warfare, it requires fewer changes to the global economy than does averting or reversing climate change.

While denial leads to certainty, it is only the certainty of death. This is true for individuals and also for civilizations.

After denial comes anger and finally, acceptance.

Changing the world's oceans to increase their uptake of CO2, as other geoengineering solutions propose, is equally dangerous, as the increased resulting acidity of the oceans kills tiny crustaceans, such as krill, that are the basis of the pyramid of life on the planet as we know it.

The first reaction to trauma is denial, then comes anger and finally, acceptance. I think the US is still between denial and anger, and I hope we will reach acceptance because almost perversely, right now, only the US has the technology that is needed for global economic change.

The new markets that arise from ecological constraints will dominate the 21st century economy, and so will markets for knowledge.