[Retric]

The Moon is very difficult as the long days result in extreme temperatures. Daytime temperatures can reach 253.4 degrees Fahrenheit (123° C). Covering a large area in a reflective surface can dramatically lower that, but the Apollo missions only worked because they stayed for a few days near lunar dawn.

There are ways around this, but the moon is a harsh mistress.

[Kye]

Make the first colony one thin, long pipe across the entire surface. The difference in temperature would provide a steady flow of air at the average temperature.

This is probably completely ridiculous for reasons obvious to someone who knows what they're talking about.