Scripps Institute of Oceanography projects that next month its monitoring station will for the first time measure CO2 at 400 parts per million. Atmospheric CO2 has risen from 280 parts per million before the Industrial Revolution. 400 ppm is an arbitrary milestone that we'll blow right past on our way to 450 ppm within a few decades. This is an unprecedentedly fast rate of increase and it's getting faster. Not all measuring stations are exactly the same: A NOAA station in the Arctic measured CO2 at 400 ppm last year.[more inside]
posted by Sleeper
on Apr 25, 2013 -
Instead of reducing emissions, maybe we can block out the sun. This is a proposal offered by the United States in response to a draft of a UN report on climate change, prepared by the Intergovernmental Panel on Climate Change. According to the linked article, the U.S. has resisted a treaty that would involve binding targets for emissions reductions, and is instead pushing for the exploration of techniques for blocking out the sun, including (according to the Sydney Morning Herald article) "putting a giant screen into orbit, thousands of tiny, shiny balloons, or microscopic sulfate droplets pumped into the high atmosphere to mimic the cooling effects of a volcanic eruption." This is via Yale Law professor Jack Balkin, who speculates that there is Biblical precedent for this proposal.
posted by jayder
on Jan 29, 2007 -