You are responsible for melting this much Arctic sea ice per year

The next roundtrip flight you take from New York to Europe means you will personally contribute to the melting of 32 square feet of Arctic sea ice by September in a given year, according to a groundbreaking new study published Thursday. 
Or to put it another way, in a given year, the average American melts about 538 square feet of Arctic sea ice at the end of the summer melt season. 
The study, published in the journal Science this week, for the first time makes the link between indivi