No idea what they mean by "Equivalent" either, I was just doing the math with the figures quotes up-thread. Look at the correction at the bottom of the NYT pie

No idea what they mean by "Equivalent" either, I was just doing the math with the figures quotes up-thread. Look at the correction at the bottom of the NYT piece: > "A news analysis article last Sunday about the impact of air travel on global warming referred imprecisely to the environmental impact of one round-trip flight from New York to Europe or to San Francisco. It has a warming effect equivalent to 2 or 3 tons of carbon dioxide per person, but does not generate that much carbon dioxide per person. (The estimate also includes warming from other greenhouses gases.)" So actual carbon output per person was correctly calculated, but there is some "carbon equivalent" multiplier slapped on other gasses that brings their totals up from 170kg/px to 2-3T/px.