Hydroponics
Allows you to build hydroponics tables to rapidly grow crops indoors.
Pneumatic picks
Miner's picks are 20% more effective.
Stonecutting
You can build stonecutting tables, which allow you to refine rock debris into stone blocks that can be used for construction.
Nutrient resynthesis
Nutrient paste dispensers consume 10% less food per meal produced.
Gun turret cooling
Gun turrets fire four shots in a burst instead of three.
Carpet making
Allows colonists to build carpets to increase the quality of their environments.
Fear tech 1
Research new ways to inspire fear.
You can now build gibbet cages to display the corpses of dead enemies and colonist troublemakers. Those that look upon them will feel intense fear and disgust. This is an ancient, crude, but and powerful device.