Humans with tardigrade DNA for radiation resistance risk their offspring losing said advantage if they cross with a person who is not so hardened.
Without artificial gravity and fortification,
humans' musculoskeletal structures will not develop sufficiently in lower gravity to survive on Earth. If a person is born on Mars, what do they need to do to physically return to Earth?
Can Humans that breathe CO2 breathe on Earth?
Humans with tardigrade DNA for radiation resistance risk their offspring losing said advantage if they cross with a person who is not so hardened.
Without artificial gravity and fortification, humans' musculoskeletal structures will not develop sufficiently in lower gravity to survive on Earth. If a person is born on Mars, what do they need to do to physically return to Earth?