What would be the tallest possible height for humanlike creatures in earthlike conditions?

This is about "giants" inhabiting a fictional earth-like planet somewhere in the Universe (like those in the movie Prometheus, for example).

Assuming that all the conditions (temperature, gravity, atmospheric pressure and composition, etc) on the planet are about the same as on earth, what would be the tallest possible height that a bipedal humanoid organism could reasonably attain?

The assumptions here would be that:

• these humanoid organisms are built similarly to humans, with a brain, heart, lungs, an oxygen carrying circulation of blood, a human-like skeleton and so on
• there should not be any hydrogen or other mechanisms that make these creatures lighter
• the organs and the skeleton could be allowed to be stronger but their operation would have to follow standard laws of physics
• the civilization of these humanoids may have developed some way to obtain large amounts of energy to support their physical energy needs, but they are still dependent on consuming the nutrients in the form of solid or liquid food

posted over 8 years ago

user100487‭

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