Hawaii’s Mauna Loa Observatory just reported that the annual increase in CO2 concentration in the atmosphere in 2012 was 2.67ppm bringing the mean concentration for the year to 395ppm. The only prior year to record a greater increase was 1998… Read More »Climate Change: Reality and Perception
Canada and the Keystone XL Decision by the State Department Yesterday, March 1st, the long-awaited U.S. State Department environmental assessment of the Keystone XL pipeline was released. As widely expected, the report concluded that there would be no undue environmental… Read More »Keystone XL and Canadian Environmental Performance
How Quickly Do They Tip? Recently, I have been writing a lot about the political aspects of climate change, so today we get back to environmental and ecological science. I’m sure there will be more politics in the future, but… Read More »Learning About Environmental Tipping Points by Looking into the Past