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A comment on Birds had to relearn flight after meteor wiped out dinosaurs. Parent comment

Re:Birds had to relearn flight after meteor wiped out dinosaurs by mjmahone17 on Friday May 25, 2018 @03:40PM (#17157178)
I think you’re reading that wrong. Trains are nearly the lowest energy/kg per unit distance travelled, as they’re in the bottom of the graph. Though it’s a bit weird for the x axis to be mass, too.

Basically the y axis is a measure of efficiency. The x axis just spreads out the points so you can compare things of similar mass.

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Re:Birds had to relearn flight after meteor wiped out dinosaurs by soared on Friday May 25, 2018 @04:31PM (#17157663)
Oh I was reading it wrong, thank you. Its hard to see on mobile. Glad to hear trains are efficient again though.
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