Science gets a lot of respect these days. Unfortunately, it’s also getting a lot of competition from misinformation.
When the first baby is born off-Earth, it will be a milestone as momentous as humanity's first steps out of Africa.
Mars has sunlight and reservoirs of water, carbon, nitrogen, and oxygen. One planet lived and the other died. Perhaps we can make it live again?
If early colonies are restocked with new recruits from Earth, physiological changes will be modest. But subsequent colonists may sever the umbilical.
The colonists will be a young offshoot of the human tree, with the potential to evolve into a different species.