According to a study by Alexander Wissner-Gross, PhD, physicist at Harvard University and environmental activist, an average website causes about 0.02g (0,0008oz.) of carbon dioxide for each visit. Assuming an average blog gets 15,000 visits a month, it has yearly carbon dioxide emissions of 3,6kg (8lb.). This can mainly be tracked back to the immense energy usage from (mainframe) computers, servers, and their cooling systems.
“My blog is carbon neutral” is an initiative, originally started in Germany by the “Make it Green” program, that has the goal to reduce carbon dioxide emissions. They plant a tree for your blog and thereby neutralize your blog’s carbon footprint for the next 50 years! Everyone can make a small contribution to the environment. Every tree counts!