There were also no occurrences of the words "sun", "light", or "insolation". The further away from the equator you go, the more your sunlight becomes a fickle

There were also no occurrences of the words "sun", "light", or "insolation". The further away from the equator you go, the more your sunlight becomes a fickle seasonal creature hitting you at odd angles in varying intensity. Temperature isn't the only variable affecting the growing season and agricultural productivity.