In case the world can't contain its carbon emissions, among geoengineering fixes Dan Whaley, founder and chief executive of California-based Climos, hopes tiny plankton that live on the ocean surface can be used to absorb CO2 as they grow. "These are not silver bullet solutions, but things that might take the edge off," he told Reuters. "What is the risk of doing nothing? We think it's so extraordinary it's apocalyptic. These geoengineering projects, the research into this, is an exercise to reduce future risk."

Reasonably thoughtful overview of the field by The Atlantic.   "If Martin’s ideas are sound, Climos could in effect become the world’s gardener by seeding Antarctic waters with iron and creating vast, rapidly growing offshore forests to replace the ones that no longer exist on land."

Tom Merrit (Executive editor of CNET TV) and Roger Chang from East Meets West interview Climos CEO Dan Whaley