What concept suggests adapting the human body via genetic engineering or cybernetics instead of planetary modification?

Pantropy

Pantropy represents an alternative philosophical and technological path away from the centuries-long commitment required for true planetary terraforming. Instead of expending massive resources to manipulate the entire environment to suit human physiology—such as achieving perfect atmospheric pressure or gravity levels—pantropy focuses on adapting humanity itself to the existing or near-term conditions of an alien world. This involves leveraging advanced genetic engineering, biotechnology, and cybernetics to modify humans, potentially creating adaptations like lungs capable of handling lower oxygen concentrations or requiring external cybernetic supports to counteract low gravity, offering a potentially faster route to making environments like Mars survivable.