"The Artwork That Infuriated Big Coal" by Michelle Nijhuis
The link address is: http://www.slate.com/articles/health_and_science/science/2012/10/carbon_sink_sculpture_at_university_of_wyoming_mining_and_energy_donors.html
The link address is: http://www.slate.com/articles/health_and_science/science/2012/10/carbon_sink_sculpture_at_university_of_wyoming_mining_and_energy_donors.html