Monthly Archives: April 2016

Have We Already Tipped? My growing concern about the challenges we face.

The scientists at the Scripps Institution of Oceanography who manage one of the two sets of instruments atop Mauna Loa (NOAA manages the other set) announced on April 20th that concentrations of CO2 exceeded 409 ppm for the first time in recorded history.  While concentrations will soon fall slightly as a summer of photosynthesis commences … Continue reading »

Categories: Arctic, Canada's environmental policies, Changing Oceans, Climate change, Coal, Economics, In the News, Politics | 2 Comments

What Does the Bleaching of Vast Areas of the Northern Great Barrier Reef Really Mean?

On March 30th, I briefly commented on the bleaching now taking place on the northern Great Barrier Reef.  Today I want to talk about what this really means. XL Catlin Seaview Survey divers over bleached coral at Lizard Island, March 2016.  Photo © AFP/Getty Reports so far indicate that there has been major damage and … Continue reading »

Categories: Climate change, Coal, coral reef science, In the News, Politics | 7 Comments