Adapting to and/or fixing Earth's climate is easier than terraforming Mars by an enormous amount. Mars is more inhospitable to life than the center of Antarctic

Adapting to and/or fixing Earth's climate is easier than terraforming Mars by an enormous amount. Mars is more inhospitable to life than the center of Antarctica during the winter. Also, it's months away in a spaceship. There's no scenario in which Mars is a viable alternative for the human race this century.