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  1. This is really cool!! I would not have guessed small mammals are so inefficient. And the flying animals are more efficient than I would have guessed. 

    I wonder what the dot directly under “automobile” is? It’s the only other vehicle that’s more efficient than a human walking. 

    And what’s a velomobile?

  2. Thanks to this chart I learned a rabbit is a bit heavier than 1kg and a rat is a bit less and that helicopters are somehow more efficient than both

  3. in theory you have to account for the costs of building the bicycle, and i bet i am less efficient that a lot of other humans, but still neat to see in graph form

  4. somethingworthwhile on

    Is it possible to design a “bike” for a salmon? Something that helps them move faster/more efficiently? Maybe a longer tail fin? Sleeker skin?

  5. BicycleIndividual on

    The trend of lighter animals being less efficient makes me think that the efficiency metric [ energy / (mass * distance) ] should be adjusted to be more useful.

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