New vs Old Earth
Probably the first real difference is the green sky, the two suns, the two moons and of course the different plants and animals. On NewEarth there is an abundance of fresh water, but there are salt water oceans as well. The humans on NewEarth are dedicated “Greenies” descendants of people who left old earth to establish human settlements based on not using environment destroying technologies. Over time that was translated into not using much advanced technology at all, especially as humans grew a connection to the planet.