Condenser

A Condenser increases the rainfall in its own and ALL SURROUNDING SQUARES. It also provides an additional +1 nutrient in its own square, cumulative with farm bonuses. Use condensers to increase nutrient production drastically in dry areas. Condensers have a significant negative ecological impact.

Background
Some regions   of Planet's   surface received too little rain to support intensive agriculture, Irrigation water had to be brought in from vast distances and carefully conserved. Eventually, the colonists learned how to construct large systems of wind traps that efficiently extracted moisture from the air, allowing the cultivation of relatively arid land.