Hi there, I'd like to connect with people to discuss technical aspects of settlement of mars.
I'd look at a house on earth and ask: what things have to be supplied from the outside; what things can be produced inside the house? Houses on earth have piping for water, and cabling for electricity.
Plants can be grown in a green-house using these two ingredients, and the people can sleep in a spaceship.
Comment whatever comes to your mind.
oxygen could be produced from water and electricity though.
Heating/cooling: when you're exposed to 20°C water, it feels much colder than if you're exposed to 20°C air. That is because water has a higher density, and transports heat away from your body much faster. Now, mars has a very thin atmosphere. That means that it transports heat away from your body much more slowly. So even if it has -50°C, it will not feel likek -50°C on earth. Because you will feel only a fraction of that coldness.