Category Archives: Carbon Dioxide

312 & 2,600,000,000

I am inspired by students from Dalhousie University in Halifax who have been getting tattoos.  These are simple tattoos, just three digits, placed somewhere conspicuous.  The number is the concentration of carbon dioxide in the Earth’s atmosphere in their birth year.  Were I inclined to get a tattoo, mine would be 319. Since my birth […]

Biomass Energy and Climate Change

The new administration in Washington is filled with climate change deniers.  They reject the consensus among scientists that human behaviors emitting greenhouse gases contribute significantly to climate change.  The reality — climate change is part of a larger problem better known as global change.  Over 9 billion humans, many living relatively sumptuous lifestyles like ours […]