Hand crafting stuff costs health. Keep some fish handy, and research Automation ASAP.

Makes solar panels placed in desert terrain more powerful.

Less refined fuels pollute more. Power production slightly more nuanced. (Decreased efficiency for simpler tech. Adds a more efficient boiler. Electric furnaces consume 50% more power.)

Adds a new research line to sacrifice newly researched lab speed for bonus productivity instead.

Adds a fluid version of flamethrower ammo, for use in flamethrower turrets.

Adds regrowing trees and respawning fish.

Extends underground belt distance based on their speed.

Preserves partial progress when switching research goals.

Adds a security camera for monitoring (very) small areas.

Restores steel furnaces to pollute at the same rate as stone furnaces. Because linear is boring.