Signs From Earth

Global Power Shifts Under Climate Change

Jamais Cascio on Climate Change and Global Power

... the possible political shake-up coming in part from how we respond to climate disruption. 2030 is a good target point for this issue, since I'm fairly confident that by then we'll have seen some significant changes in how we govern the planet.

"This scenario most likely to make this apparent is one in which we embark upon a set of geoengineering-based responses to the climate problem (not as the sole solution, but as a disaster-avoidance measure), probably starting in the early-mid 2010s. These would likely be various forms of thermal management, such as...

Charting Geoengineering

From Nature Blog "The Great Beyond": An attempt at visual comparison of various geoengineering schemes, assessing effectiveness, cost, safety, and speed of five approaches: ocean fertilization, stratospheric aerosols, cloud whitening, atmospheric carbon capture, and geochemical carbon capture. Resources

Climate Plan B Needed

In submitted testimony to the British Parliament, climate scientist Ken Caldeira of the Carnegie Institution said that while steep cuts in carbon emissions are essential to stabilizing global climate, there also needs to be a backup plan. Geoengineering solutions such as injecting dust into the atmosphere are risky, but may become necessary if emissions cuts are insufficient to stave off catastrophic warming. He urged that research into the pros and cons of geoengineering be made a high priority.